[gentoo-commits] proj/linux-patches:4.4 commit in: /

["Mike Pagano" <mpagano@gentoo.org>]

commit:     adcfcbbd4c60a15e79075038dfb7d3fbcbd865a2
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Dec 14 10:38:14 2021 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Dec 14 10:38:14 2021 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=adcfcbbd

Linux patch 4.4.295

Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org>

 0000_README              |    4 +
 1294_linux-4.4.295.patch | 1346 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 1350 insertions(+)

diff --git a/0000_README b/0000_README
index 3abdd816..e68fc753 100644
--- a/0000_README
+++ b/0000_README
@@ -1219,6 +1219,10 @@ Patch:  1293_linux-4.4.294.patc
 From:   http://www.kernel.org
 Desc:   Linux 4.4.294
 
+Patch:  1294_linux-4.4.295.patc
+From:   http://www.kernel.org
+Desc:   Linux 4.4.295
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.

diff --git a/1294_linux-4.4.295.patch b/1294_linux-4.4.295.patch
new file mode 100644
index 00000000..9acdbce7
--- /dev/null
+++ b/1294_linux-4.4.295.patch
@@ -0,0 +1,1346 @@
+diff --git a/Makefile b/Makefile
+index 736ee5fc5f24f..b2a9f72ab8000 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 4
+-SUBLEVEL = 294
++SUBLEVEL = 295
+ EXTRAVERSION =
+ NAME = Blurry Fish Butt
+ 
+diff --git a/block/ioprio.c b/block/ioprio.c
+index 01b8116298a13..284bdfa3aacfc 100644
+--- a/block/ioprio.c
++++ b/block/ioprio.c
+@@ -202,6 +202,7 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
+ 				pgrp = task_pgrp(current);
+ 			else
+ 				pgrp = find_vpid(who);
++			read_lock(&tasklist_lock);
+ 			do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
+ 				tmpio = get_task_ioprio(p);
+ 				if (tmpio < 0)
+@@ -211,6 +212,8 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
+ 				else
+ 					ret = ioprio_best(ret, tmpio);
+ 			} while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
++			read_unlock(&tasklist_lock);
++
+ 			break;
+ 		case IOPRIO_WHO_USER:
+ 			uid = make_kuid(current_user_ns(), who);
+diff --git a/drivers/android/binder.c b/drivers/android/binder.c
+index 951dd66ee47fd..9ccb109410c42 100644
+--- a/drivers/android/binder.c
++++ b/drivers/android/binder.c
+@@ -2623,21 +2623,18 @@ static int binder_free_thread(struct binder_proc *proc,
+ 	}
+ 
+ 	/*
+-	 * If this thread used poll, make sure we remove the waitqueue
+-	 * from any epoll data structures holding it with POLLFREE.
+-	 * waitqueue_active() is safe to use here because we're holding
+-	 * the global lock.
++	 * If this thread used poll, make sure we remove the waitqueue from any
++	 * poll data structures holding it.
+ 	 */
+-	if ((thread->looper & BINDER_LOOPER_STATE_POLL) &&
+-	    waitqueue_active(&thread->wait)) {
+-		wake_up_poll(&thread->wait, POLLHUP | POLLFREE);
+-	}
++	if (thread->looper & BINDER_LOOPER_STATE_POLL)
++		wake_up_pollfree(&thread->wait);
+ 
+ 	/*
+-	 * This is needed to avoid races between wake_up_poll() above and
+-	 * and ep_remove_waitqueue() called for other reasons (eg the epoll file
+-	 * descriptor being closed); ep_remove_waitqueue() holds an RCU read
+-	 * lock, so we can be sure it's done after calling synchronize_rcu().
++	 * This is needed to avoid races between wake_up_pollfree() above and
++	 * someone else removing the last entry from the queue for other reasons
++	 * (e.g. ep_remove_wait_queue() being called due to an epoll file
++	 * descriptor being closed).  Such other users hold an RCU read lock, so
++	 * we can be sure they're done after we call synchronize_rcu().
+ 	 */
+ 	if (thread->looper & BINDER_LOOPER_STATE_POLL)
+ 		synchronize_rcu();
+diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
+index 7120da5a03f3e..6144383ec8bc8 100644
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -4153,6 +4153,8 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ 	{ " 2GB ATA Flash Disk", "ADMA428M",	ATA_HORKAGE_NODMA },
+ 	/* Odd clown on sil3726/4726 PMPs */
+ 	{ "Config  Disk",	NULL,		ATA_HORKAGE_DISABLE },
++	/* Similar story with ASMedia 1092 */
++	{ "ASMT109x- Config",	NULL,		ATA_HORKAGE_DISABLE },
+ 
+ 	/* Weird ATAPI devices */
+ 	{ "TORiSAN DVD-ROM DRD-N216", NULL,	ATA_HORKAGE_MAX_SEC_128 },
+diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
+index 2729ab3557bb8..fdbb7b8d347c9 100644
+--- a/drivers/hid/Kconfig
++++ b/drivers/hid/Kconfig
+@@ -166,14 +166,14 @@ config HID_CHERRY
+ 
+ config HID_CHICONY
+ 	tristate "Chicony devices"
+-	depends on HID
++	depends on USB_HID
+ 	default !EXPERT
+ 	---help---
+ 	Support for Chicony Tactical pad and special keys on Chicony keyboards.
+ 
+ config HID_CORSAIR
+ 	tristate "Corsair devices"
+-	depends on HID && USB && LEDS_CLASS
++	depends on USB_HID && LEDS_CLASS
+ 	---help---
+ 	Support for Corsair devices that are not fully compliant with the
+ 	HID standard.
+@@ -183,7 +183,7 @@ config HID_CORSAIR
+ 
+ config HID_PRODIKEYS
+ 	tristate "Prodikeys PC-MIDI Keyboard support"
+-	depends on HID && SND
++	depends on USB_HID && SND
+ 	select SND_RAWMIDI
+ 	---help---
+ 	Support for Prodikeys PC-MIDI Keyboard device support.
+@@ -389,7 +389,7 @@ config HID_LENOVO
+ 
+ config HID_LOGITECH
+ 	tristate "Logitech devices"
+-	depends on HID
++	depends on USB_HID
+ 	default !EXPERT
+ 	---help---
+ 	Support for Logitech devices that are not fully compliant with HID standard.
+@@ -693,7 +693,7 @@ config HID_SAITEK
+ 
+ config HID_SAMSUNG
+ 	tristate "Samsung InfraRed remote control or keyboards"
+-	depends on HID
++	depends on USB_HID
+ 	---help---
+ 	Support for Samsung InfraRed remote control or keyboards.
+ 
+diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c
+index f04ed9aabc3f9..f11948ddf642e 100644
+--- a/drivers/hid/hid-chicony.c
++++ b/drivers/hid/hid-chicony.c
+@@ -61,8 +61,12 @@ static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+ static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ 		unsigned int *rsize)
+ {
+-	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+-	
++	struct usb_interface *intf;
++
++	if (!hid_is_usb(hdev))
++		return rdesc;
++
++	intf = to_usb_interface(hdev->dev.parent);
+ 	if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
+ 		/* Change usage maximum and logical maximum from 0x7fff to
+ 		 * 0x2fff, so they don't exceed HID_MAX_USAGES */
+diff --git a/drivers/hid/hid-corsair.c b/drivers/hid/hid-corsair.c
+index 88be56321610a..0f429034f2053 100644
+--- a/drivers/hid/hid-corsair.c
++++ b/drivers/hid/hid-corsair.c
+@@ -551,7 +551,12 @@ static int corsair_probe(struct hid_device *dev, const struct hid_device_id *id)
+ 	int ret;
+ 	unsigned long quirks = id->driver_data;
+ 	struct corsair_drvdata *drvdata;
+-	struct usb_interface *usbif = to_usb_interface(dev->dev.parent);
++	struct usb_interface *usbif;
++
++	if (!hid_is_usb(dev))
++		return -EINVAL;
++
++	usbif = to_usb_interface(dev->dev.parent);
+ 
+ 	drvdata = devm_kzalloc(&dev->dev, sizeof(struct corsair_drvdata),
+ 			       GFP_KERNEL);
+diff --git a/drivers/hid/hid-elo.c b/drivers/hid/hid-elo.c
+index 5eea6fe0d7bd8..c3ecac13e6203 100644
+--- a/drivers/hid/hid-elo.c
++++ b/drivers/hid/hid-elo.c
+@@ -230,6 +230,9 @@ static int elo_probe(struct hid_device *hdev, const struct hid_device_id *id)
+ 	struct elo_priv *priv;
+ 	int ret;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ 	if (!priv)
+ 		return -ENOMEM;
+diff --git a/drivers/hid/hid-holtek-kbd.c b/drivers/hid/hid-holtek-kbd.c
+index ab9da597106fa..2f8eb66397444 100644
+--- a/drivers/hid/hid-holtek-kbd.c
++++ b/drivers/hid/hid-holtek-kbd.c
+@@ -143,12 +143,17 @@ static int holtek_kbd_input_event(struct input_dev *dev, unsigned int type,
+ static int holtek_kbd_probe(struct hid_device *hdev,
+ 		const struct hid_device_id *id)
+ {
+-	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+-	int ret = hid_parse(hdev);
++	struct usb_interface *intf;
++	int ret;
++
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
+ 
++	ret = hid_parse(hdev);
+ 	if (!ret)
+ 		ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ 
++	intf = to_usb_interface(hdev->dev.parent);
+ 	if (!ret && intf->cur_altsetting->desc.bInterfaceNumber == 1) {
+ 		struct hid_input *hidinput;
+ 		list_for_each_entry(hidinput, &hdev->inputs, list) {
+diff --git a/drivers/hid/hid-holtek-mouse.c b/drivers/hid/hid-holtek-mouse.c
+index 78b3a0c767751..27c08ddab0e1a 100644
+--- a/drivers/hid/hid-holtek-mouse.c
++++ b/drivers/hid/hid-holtek-mouse.c
+@@ -65,6 +65,14 @@ static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ 	return rdesc;
+ }
+ 
++static int holtek_mouse_probe(struct hid_device *hdev,
++			      const struct hid_device_id *id)
++{
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++	return 0;
++}
++
+ static const struct hid_device_id holtek_mouse_devices[] = {
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
+ 			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
+@@ -86,6 +94,7 @@ static struct hid_driver holtek_mouse_driver = {
+ 	.name = "holtek_mouse",
+ 	.id_table = holtek_mouse_devices,
+ 	.report_fixup = holtek_mouse_report_fixup,
++	.probe = holtek_mouse_probe,
+ };
+ 
+ module_hid_driver(holtek_mouse_driver);
+diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
+index 0fd9fc135f3d9..c77e2303ba3e6 100644
+--- a/drivers/hid/hid-lg.c
++++ b/drivers/hid/hid-lg.c
+@@ -659,12 +659,18 @@ static int lg_event(struct hid_device *hdev, struct hid_field *field,
+ 
+ static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id)
+ {
+-	struct usb_interface *iface = to_usb_interface(hdev->dev.parent);
+-	__u8 iface_num = iface->cur_altsetting->desc.bInterfaceNumber;
++	struct usb_interface *iface;
++	__u8 iface_num;
+ 	unsigned int connect_mask = HID_CONNECT_DEFAULT;
+ 	struct lg_drv_data *drv_data;
+ 	int ret;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
++	iface = to_usb_interface(hdev->dev.parent);
++	iface_num = iface->cur_altsetting->desc.bInterfaceNumber;
++
+ 	/* G29 only work with the 1st interface */
+ 	if ((hdev->product == USB_DEVICE_ID_LOGITECH_G29_WHEEL) &&
+ 	    (iface_num != 0)) {
+diff --git a/drivers/hid/hid-prodikeys.c b/drivers/hid/hid-prodikeys.c
+index cba15edd47c2a..e708152d3ea03 100644
+--- a/drivers/hid/hid-prodikeys.c
++++ b/drivers/hid/hid-prodikeys.c
+@@ -803,12 +803,18 @@ static int pk_raw_event(struct hid_device *hdev, struct hid_report *report,
+ static int pk_probe(struct hid_device *hdev, const struct hid_device_id *id)
+ {
+ 	int ret;
+-	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+-	unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
++	struct usb_interface *intf;
++	unsigned short ifnum;
+ 	unsigned long quirks = id->driver_data;
+ 	struct pk_device *pk;
+ 	struct pcmidi_snd *pm = NULL;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
++	intf = to_usb_interface(hdev->dev.parent);
++	ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
++
+ 	pk = kzalloc(sizeof(*pk), GFP_KERNEL);
+ 	if (pk == NULL) {
+ 		hid_err(hdev, "can't alloc descriptor\n");
+diff --git a/drivers/hid/hid-roccat-arvo.c b/drivers/hid/hid-roccat-arvo.c
+index 1948208fe0380..58ab1d878a949 100644
+--- a/drivers/hid/hid-roccat-arvo.c
++++ b/drivers/hid/hid-roccat-arvo.c
+@@ -349,6 +349,9 @@ static int arvo_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-isku.c b/drivers/hid/hid-roccat-isku.c
+index bc62ed91e451c..529dcc51a2beb 100644
+--- a/drivers/hid/hid-roccat-isku.c
++++ b/drivers/hid/hid-roccat-isku.c
+@@ -329,6 +329,9 @@ static int isku_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
+index 6c2b821c8d8b5..227504764c2f8 100644
+--- a/drivers/hid/hid-roccat-kone.c
++++ b/drivers/hid/hid-roccat-kone.c
+@@ -756,6 +756,9 @@ static int kone_probe(struct hid_device *hdev, const struct hid_device_id *id)
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-koneplus.c b/drivers/hid/hid-roccat-koneplus.c
+index 5e99fcdc71b9c..3403cc528f4e9 100644
+--- a/drivers/hid/hid-roccat-koneplus.c
++++ b/drivers/hid/hid-roccat-koneplus.c
+@@ -438,6 +438,9 @@ static int koneplus_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-konepure.c b/drivers/hid/hid-roccat-konepure.c
+index 07de2f9014c67..ef9508822e5f0 100644
+--- a/drivers/hid/hid-roccat-konepure.c
++++ b/drivers/hid/hid-roccat-konepure.c
+@@ -136,6 +136,9 @@ static int konepure_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-kovaplus.c b/drivers/hid/hid-roccat-kovaplus.c
+index 1073c0d1fae59..549b15ef79b94 100644
+--- a/drivers/hid/hid-roccat-kovaplus.c
++++ b/drivers/hid/hid-roccat-kovaplus.c
+@@ -508,6 +508,9 @@ static int kovaplus_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-lua.c b/drivers/hid/hid-roccat-lua.c
+index 65e2e76bf2fe5..6a8dc17cddf20 100644
+--- a/drivers/hid/hid-roccat-lua.c
++++ b/drivers/hid/hid-roccat-lua.c
+@@ -163,6 +163,9 @@ static int lua_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-pyra.c b/drivers/hid/hid-roccat-pyra.c
+index 47d7e74231e5a..4fed4b899da25 100644
+--- a/drivers/hid/hid-roccat-pyra.c
++++ b/drivers/hid/hid-roccat-pyra.c
+@@ -457,6 +457,9 @@ static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-ryos.c b/drivers/hid/hid-roccat-ryos.c
+index 47cc8f30ff6d4..fda4a396a12e8 100644
+--- a/drivers/hid/hid-roccat-ryos.c
++++ b/drivers/hid/hid-roccat-ryos.c
+@@ -144,6 +144,9 @@ static int ryos_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-roccat-savu.c b/drivers/hid/hid-roccat-savu.c
+index 6dbf6e04dce75..0230fb54f08a5 100644
+--- a/drivers/hid/hid-roccat-savu.c
++++ b/drivers/hid/hid-roccat-savu.c
+@@ -116,6 +116,9 @@ static int savu_probe(struct hid_device *hdev,
+ {
+ 	int retval;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	retval = hid_parse(hdev);
+ 	if (retval) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-samsung.c b/drivers/hid/hid-samsung.c
+index 7cbb067d4a9e3..89bb2260367f3 100644
+--- a/drivers/hid/hid-samsung.c
++++ b/drivers/hid/hid-samsung.c
+@@ -157,6 +157,9 @@ static int samsung_probe(struct hid_device *hdev,
+ 	int ret;
+ 	unsigned int cmask = HID_CONNECT_DEFAULT;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	ret = hid_parse(hdev);
+ 	if (ret) {
+ 		hid_err(hdev, "parse failed\n");
+diff --git a/drivers/hid/hid-uclogic.c b/drivers/hid/hid-uclogic.c
+index 85ac43517e3ff..4cf0aaad56198 100644
+--- a/drivers/hid/hid-uclogic.c
++++ b/drivers/hid/hid-uclogic.c
+@@ -795,6 +795,9 @@ static int uclogic_tablet_enable(struct hid_device *hdev)
+ 	__u8 *p;
+ 	s32 v;
+ 
++	if (!hid_is_usb(hdev))
++		return -EINVAL;
++
+ 	/*
+ 	 * Read string descriptor containing tablet parameters. The specific
+ 	 * string descriptor and data were discovered by sniffing the Windows
+diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
+index 4248d253c32ad..bd087e849090b 100644
+--- a/drivers/hid/i2c-hid/i2c-hid.c
++++ b/drivers/hid/i2c-hid/i2c-hid.c
+@@ -789,7 +789,7 @@ static int i2c_hid_power(struct hid_device *hid, int lvl)
+ 	return 0;
+ }
+ 
+-static struct hid_ll_driver i2c_hid_ll_driver = {
++struct hid_ll_driver i2c_hid_ll_driver = {
+ 	.parse = i2c_hid_parse,
+ 	.start = i2c_hid_start,
+ 	.stop = i2c_hid_stop,
+@@ -799,6 +799,7 @@ static struct hid_ll_driver i2c_hid_ll_driver = {
+ 	.output_report = i2c_hid_output_report,
+ 	.raw_request = i2c_hid_raw_request,
+ };
++EXPORT_SYMBOL_GPL(i2c_hid_ll_driver);
+ 
+ static int i2c_hid_init_irq(struct i2c_client *client)
+ {
+diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
+index a7ba4db8cff72..cbcaf5e8c624a 100644
+--- a/drivers/hid/uhid.c
++++ b/drivers/hid/uhid.c
+@@ -372,7 +372,7 @@ static int uhid_hid_output_report(struct hid_device *hid, __u8 *buf,
+ 	return uhid_hid_output_raw(hid, buf, count, HID_OUTPUT_REPORT);
+ }
+ 
+-static struct hid_ll_driver uhid_hid_driver = {
++struct hid_ll_driver uhid_hid_driver = {
+ 	.start = uhid_hid_start,
+ 	.stop = uhid_hid_stop,
+ 	.open = uhid_hid_open,
+@@ -381,6 +381,7 @@ static struct hid_ll_driver uhid_hid_driver = {
+ 	.raw_request = uhid_hid_raw_request,
+ 	.output_report = uhid_hid_output_report,
+ };
++EXPORT_SYMBOL_GPL(uhid_hid_driver);
+ 
+ #ifdef CONFIG_COMPAT
+ 
+diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
+index c7da6ec4d923d..90f6aa9d5eb3e 100644
+--- a/drivers/hid/usbhid/hid-core.c
++++ b/drivers/hid/usbhid/hid-core.c
+@@ -1272,7 +1272,7 @@ static int usbhid_idle(struct hid_device *hid, int report, int idle,
+ 	return hid_set_idle(dev, ifnum, report, idle);
+ }
+ 
+-static struct hid_ll_driver usb_hid_driver = {
++struct hid_ll_driver usb_hid_driver = {
+ 	.parse = usbhid_parse,
+ 	.start = usbhid_start,
+ 	.stop = usbhid_stop,
+@@ -1285,6 +1285,7 @@ static struct hid_ll_driver usb_hid_driver = {
+ 	.output_report = usbhid_output_report,
+ 	.idle = usbhid_idle,
+ };
++EXPORT_SYMBOL_GPL(usb_hid_driver);
+ 
+ static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id)
+ {
+diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
+index e06af5b9f59e8..00afff48aaec8 100644
+--- a/drivers/hid/wacom_sys.c
++++ b/drivers/hid/wacom_sys.c
+@@ -458,7 +458,7 @@ static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
+ 	 * Skip the query for this type and modify defaults based on
+ 	 * interface number.
+ 	 */
+-	if (features->type == WIRELESS) {
++	if (features->type == WIRELESS && intf) {
+ 		if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
+ 			features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
+ 		else
+@@ -1512,6 +1512,9 @@ static void wacom_wireless_work(struct work_struct *work)
+ 
+ 	wacom_destroy_battery(wacom);
+ 
++	if (!usbdev)
++		return;
++
+ 	/* Stylus interface */
+ 	hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
+ 	wacom1 = hid_get_drvdata(hdev1);
+@@ -1689,8 +1692,6 @@ static void wacom_update_name(struct wacom *wacom)
+ static int wacom_probe(struct hid_device *hdev,
+ 		const struct hid_device_id *id)
+ {
+-	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+-	struct usb_device *dev = interface_to_usbdev(intf);
+ 	struct wacom *wacom;
+ 	struct wacom_wac *wacom_wac;
+ 	struct wacom_features *features;
+@@ -1733,8 +1734,14 @@ static int wacom_probe(struct hid_device *hdev,
+ 		goto fail_type;
+ 	}
+ 
+-	wacom->usbdev = dev;
+-	wacom->intf = intf;
++	if (hid_is_usb(hdev)) {
++		struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
++		struct usb_device *dev = interface_to_usbdev(intf);
++
++		wacom->usbdev = dev;
++		wacom->intf = intf;
++	}
++
+ 	mutex_init(&wacom->lock);
+ 	INIT_WORK(&wacom->work, wacom_wireless_work);
+ 
+diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
+index 0667b2875ee42..d139073ea48f0 100644
+--- a/drivers/iio/accel/kxcjk-1013.c
++++ b/drivers/iio/accel/kxcjk-1013.c
+@@ -1284,8 +1284,7 @@ static int kxcjk1013_probe(struct i2c_client *client,
+ err_iio_unregister:
+ 	iio_device_unregister(indio_dev);
+ err_buffer_cleanup:
+-	if (data->dready_trig)
+-		iio_triggered_buffer_cleanup(indio_dev);
++	iio_triggered_buffer_cleanup(indio_dev);
+ err_trigger_unregister:
+ 	if (data->dready_trig)
+ 		iio_trigger_unregister(data->dready_trig);
+@@ -1308,8 +1307,8 @@ static int kxcjk1013_remove(struct i2c_client *client)
+ 
+ 	iio_device_unregister(indio_dev);
+ 
++	iio_triggered_buffer_cleanup(indio_dev);
+ 	if (data->dready_trig) {
+-		iio_triggered_buffer_cleanup(indio_dev);
+ 		iio_trigger_unregister(data->dready_trig);
+ 		iio_trigger_unregister(data->motion_trig);
+ 	}
+diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
+index d44c1b3a131cf..cc9b9344e2081 100644
+--- a/drivers/iio/accel/mma8452.c
++++ b/drivers/iio/accel/mma8452.c
+@@ -1011,7 +1011,7 @@ static int mma8452_trigger_setup(struct iio_dev *indio_dev)
+ 	if (ret)
+ 		return ret;
+ 
+-	indio_dev->trig = trig;
++	indio_dev->trig = iio_trigger_get(trig);
+ 
+ 	return 0;
+ }
+diff --git a/drivers/iio/gyro/itg3200_buffer.c b/drivers/iio/gyro/itg3200_buffer.c
+index e04483254b283..7157b1a731a60 100644
+--- a/drivers/iio/gyro/itg3200_buffer.c
++++ b/drivers/iio/gyro/itg3200_buffer.c
+@@ -64,9 +64,9 @@ static irqreturn_t itg3200_trigger_handler(int irq, void *p)
+ 
+ 	iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp);
+ 
++error_ret:
+ 	iio_trigger_notify_done(indio_dev->trig);
+ 
+-error_ret:
+ 	return IRQ_HANDLED;
+ }
+ 
+diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
+index 111552b336fe0..26bd0983fa065 100644
+--- a/drivers/iio/light/ltr501.c
++++ b/drivers/iio/light/ltr501.c
+@@ -1248,7 +1248,7 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
+ 		ret = regmap_bulk_read(data->regmap, LTR501_ALS_DATA1,
+ 				       (u8 *)als_buf, sizeof(als_buf));
+ 		if (ret < 0)
+-			return ret;
++			goto done;
+ 		if (test_bit(0, indio_dev->active_scan_mask))
+ 			scan.channels[j++] = le16_to_cpu(als_buf[1]);
+ 		if (test_bit(1, indio_dev->active_scan_mask))
+diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
+index 42d334ba612ea..8197af263b809 100644
+--- a/drivers/iio/light/stk3310.c
++++ b/drivers/iio/light/stk3310.c
+@@ -547,9 +547,8 @@ static irqreturn_t stk3310_irq_event_handler(int irq, void *private)
+ 	mutex_lock(&data->lock);
+ 	ret = regmap_field_read(data->reg_flag_nf, &dir);
+ 	if (ret < 0) {
+-		dev_err(&data->client->dev, "register read failed\n");
+-		mutex_unlock(&data->lock);
+-		return ret;
++		dev_err(&data->client->dev, "register read failed: %d\n", ret);
++		goto out;
+ 	}
+ 	event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1,
+ 				     IIO_EV_TYPE_THRESH,
+@@ -561,6 +560,7 @@ static irqreturn_t stk3310_irq_event_handler(int irq, void *private)
+ 	ret = regmap_field_write(data->reg_flag_psint, 0);
+ 	if (ret < 0)
+ 		dev_err(&data->client->dev, "failed to reset interrupts\n");
++out:
+ 	mutex_unlock(&data->lock);
+ 
+ 	return IRQ_HANDLED;
+diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
+index d4ae43f71e723..fee7c6f3e9710 100644
+--- a/drivers/irqchip/irq-gic-v3-its.c
++++ b/drivers/irqchip/irq-gic-v3-its.c
+@@ -356,7 +356,7 @@ static struct its_collection *its_build_invall_cmd(struct its_cmd_block *cmd,
+ 
+ 	its_fixup_cmd(cmd);
+ 
+-	return NULL;
++	return desc->its_invall_cmd.col;
+ }
+ 
+ static u64 its_cmd_ptr_to_offset(struct its_node *its,
+diff --git a/drivers/irqchip/irq-nvic.c b/drivers/irqchip/irq-nvic.c
+index b1777104fd9fe..9694529b709de 100644
+--- a/drivers/irqchip/irq-nvic.c
++++ b/drivers/irqchip/irq-nvic.c
+@@ -29,7 +29,7 @@
+ 
+ #define NVIC_ISER		0x000
+ #define NVIC_ICER		0x080
+-#define NVIC_IPR		0x300
++#define NVIC_IPR		0x400
+ 
+ #define NVIC_MAX_BANKS		16
+ /*
+diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
+index c1317889d3d8d..ced11ea892698 100644
+--- a/drivers/net/can/pch_can.c
++++ b/drivers/net/can/pch_can.c
+@@ -703,11 +703,11 @@ static int pch_can_rx_normal(struct net_device *ndev, u32 obj_num, int quota)
+ 			cf->data[i + 1] = data_reg >> 8;
+ 		}
+ 
+-		netif_receive_skb(skb);
+ 		rcv_pkts++;
+ 		stats->rx_packets++;
+ 		quota--;
+ 		stats->rx_bytes += cf->can_dlc;
++		netif_receive_skb(skb);
+ 
+ 		pch_fifo_thresh(priv, obj_num);
+ 		obj_num++;
+diff --git a/drivers/net/can/sja1000/ems_pcmcia.c b/drivers/net/can/sja1000/ems_pcmcia.c
+index 381de998d2f16..fef5c59c0f4ca 100644
+--- a/drivers/net/can/sja1000/ems_pcmcia.c
++++ b/drivers/net/can/sja1000/ems_pcmcia.c
+@@ -243,7 +243,12 @@ static int ems_pcmcia_add_card(struct pcmcia_device *pdev, unsigned long base)
+ 			free_sja1000dev(dev);
+ 	}
+ 
+-	err = request_irq(dev->irq, &ems_pcmcia_interrupt, IRQF_SHARED,
++	if (!card->channels) {
++		err = -ENODEV;
++		goto failure_cleanup;
++	}
++
++	err = request_irq(pdev->irq, &ems_pcmcia_interrupt, IRQF_SHARED,
+ 			  DRV_NAME, card);
+ 	if (!err)
+ 		return 0;
+diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
+index bb51f124d8c7d..dbd5cbc0a0a99 100644
+--- a/drivers/net/ethernet/altera/altera_tse_main.c
++++ b/drivers/net/ethernet/altera/altera_tse_main.c
+@@ -1383,16 +1383,19 @@ static int altera_tse_probe(struct platform_device *pdev)
+ 		priv->rxdescmem_busaddr = dma_res->start;
+ 
+ 	} else {
++		ret = -ENODEV;
+ 		goto err_free_netdev;
+ 	}
+ 
+-	if (!dma_set_mask(priv->device, DMA_BIT_MASK(priv->dmaops->dmamask)))
++	if (!dma_set_mask(priv->device, DMA_BIT_MASK(priv->dmaops->dmamask))) {
+ 		dma_set_coherent_mask(priv->device,
+ 				      DMA_BIT_MASK(priv->dmaops->dmamask));
+-	else if (!dma_set_mask(priv->device, DMA_BIT_MASK(32)))
++	} else if (!dma_set_mask(priv->device, DMA_BIT_MASK(32))) {
+ 		dma_set_coherent_mask(priv->device, DMA_BIT_MASK(32));
+-	else
++	} else {
++		ret = -EIO;
+ 		goto err_free_netdev;
++	}
+ 
+ 	/* MAC address space */
+ 	ret = request_and_map(pdev, "control_port", &control_port,
+diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
+index 99d33e2d35e6c..7bbf85e98974a 100644
+--- a/drivers/net/ethernet/freescale/fec.h
++++ b/drivers/net/ethernet/freescale/fec.h
+@@ -360,6 +360,9 @@ struct bufdesc_ex {
+ #define FEC_ENET_WAKEUP	((uint)0x00020000)	/* Wakeup request */
+ #define FEC_ENET_TXF	(FEC_ENET_TXF_0 | FEC_ENET_TXF_1 | FEC_ENET_TXF_2)
+ #define FEC_ENET_RXF	(FEC_ENET_RXF_0 | FEC_ENET_RXF_1 | FEC_ENET_RXF_2)
++#define FEC_ENET_RXF_GET(X)	(((X) == 0) ? FEC_ENET_RXF_0 :	\
++				(((X) == 1) ? FEC_ENET_RXF_1 :	\
++				FEC_ENET_RXF_2))
+ #define FEC_ENET_TS_AVAIL       ((uint)0x00010000)
+ #define FEC_ENET_TS_TIMER       ((uint)0x00008000)
+ 
+diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
+index 9c608211fcfd9..61ab471de4bb3 100644
+--- a/drivers/net/ethernet/freescale/fec_main.c
++++ b/drivers/net/ethernet/freescale/fec_main.c
+@@ -1407,7 +1407,7 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id)
+ 		if ((status & BD_ENET_RX_LAST) == 0)
+ 			netdev_err(ndev, "rcv is not +last\n");
+ 
+-		writel(FEC_ENET_RXF, fep->hwp + FEC_IEVENT);
++		writel(FEC_ENET_RXF_GET(queue_id), fep->hwp + FEC_IEVENT);
+ 
+ 		/* Check for errors. */
+ 		if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
+diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c
+index cb9d43c871c4c..147effc16316f 100644
+--- a/drivers/net/ethernet/qlogic/qla3xxx.c
++++ b/drivers/net/ethernet/qlogic/qla3xxx.c
+@@ -3491,20 +3491,19 @@ static int ql_adapter_up(struct ql3_adapter *qdev)
+ 
+ 	spin_lock_irqsave(&qdev->hw_lock, hw_flags);
+ 
+-	err = ql_wait_for_drvr_lock(qdev);
+-	if (err) {
+-		err = ql_adapter_initialize(qdev);
+-		if (err) {
+-			netdev_err(ndev, "Unable to initialize adapter\n");
+-			goto err_init;
+-		}
+-		netdev_err(ndev, "Releasing driver lock\n");
+-		ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
+-	} else {
++	if (!ql_wait_for_drvr_lock(qdev)) {
+ 		netdev_err(ndev, "Could not acquire driver lock\n");
++		err = -ENODEV;
+ 		goto err_lock;
+ 	}
+ 
++	err = ql_adapter_initialize(qdev);
++	if (err) {
++		netdev_err(ndev, "Unable to initialize adapter\n");
++		goto err_init;
++	}
++	ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
++
+ 	spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
+ 
+ 	set_bit(QL_ADAPTER_UP, &qdev->flags);
+diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
+index 8bef8c3dd2a3e..2c9e4ab99fe0d 100644
+--- a/drivers/net/usb/cdc_ncm.c
++++ b/drivers/net/usb/cdc_ncm.c
+@@ -175,6 +175,8 @@ static u32 cdc_ncm_check_tx_max(struct usbnet *dev, u32 new_tx)
+ 	/* clamp new_tx to sane values */
+ 	min = ctx->max_datagram_size + ctx->max_ndp_size + sizeof(struct usb_cdc_ncm_nth16);
+ 	max = min_t(u32, CDC_NCM_NTB_MAX_SIZE_TX, le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize));
++	if (max == 0)
++		max = CDC_NCM_NTB_MAX_SIZE_TX; /* dwNtbOutMaxSize not set */
+ 
+ 	/* some devices set dwNtbOutMaxSize too low for the above default */
+ 	min = min(min, max);
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index eca8d04cfb3ec..9bd380a84d5b6 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -375,7 +375,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
+ 	 * the USB-2 spec requires such endpoints to have wMaxPacketSize = 0
+ 	 * (see the end of section 5.6.3), so don't warn about them.
+ 	 */
+-	maxp = usb_endpoint_maxp(&endpoint->desc);
++	maxp = le16_to_cpu(endpoint->desc.wMaxPacketSize);
+ 	if (maxp == 0 && !(usb_endpoint_xfer_isoc(d) && asnum == 0)) {
+ 		dev_warn(ddev, "config %d interface %d altsetting %d endpoint 0x%X has invalid wMaxPacketSize 0\n",
+ 		    cfgno, inum, asnum, d->bEndpointAddress);
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index bb72d55a58b5a..1f584d15a3ca4 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -1484,6 +1484,18 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+ 	struct usb_function		*f = NULL;
+ 	u8				endp;
+ 
++	if (w_length > USB_COMP_EP0_BUFSIZ) {
++		if (ctrl->bRequestType == USB_DIR_OUT) {
++			goto done;
++		} else {
++			/* Cast away the const, we are going to overwrite on purpose. */
++			__le16 *temp = (__le16 *)&ctrl->wLength;
++
++			*temp = cpu_to_le16(USB_COMP_EP0_BUFSIZ);
++			w_length = USB_COMP_EP0_BUFSIZ;
++		}
++	}
++
+ 	/* partial re-init of the response message; the function or the
+ 	 * gadget might need to intercept e.g. a control-OUT completion
+ 	 * when we delegate to it.
+@@ -2006,7 +2018,7 @@ int composite_dev_prepare(struct usb_composite_driver *composite,
+ 	if (!cdev->req)
+ 		return -ENOMEM;
+ 
+-	cdev->req->buf = kmalloc(USB_COMP_EP0_BUFSIZ, GFP_KERNEL);
++	cdev->req->buf = kzalloc(USB_COMP_EP0_BUFSIZ, GFP_KERNEL);
+ 	if (!cdev->req->buf)
+ 		goto fail;
+ 
+diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c
+index 99ca3dabc4f34..f1c5a22704b28 100644
+--- a/drivers/usb/gadget/legacy/dbgp.c
++++ b/drivers/usb/gadget/legacy/dbgp.c
+@@ -136,7 +136,7 @@ static int dbgp_enable_ep_req(struct usb_ep *ep)
+ 		goto fail_1;
+ 	}
+ 
+-	req->buf = kmalloc(DBGP_REQ_LEN, GFP_KERNEL);
++	req->buf = kzalloc(DBGP_REQ_LEN, GFP_KERNEL);
+ 	if (!req->buf) {
+ 		err = -ENOMEM;
+ 		stp = 2;
+@@ -344,6 +344,19 @@ static int dbgp_setup(struct usb_gadget *gadget,
+ 	void *data = NULL;
+ 	u16 len = 0;
+ 
++	if (length > DBGP_REQ_LEN) {
++		if (ctrl->bRequestType == USB_DIR_OUT) {
++			return err;
++		} else {
++			/* Cast away the const, we are going to overwrite on purpose. */
++			__le16 *temp = (__le16 *)&ctrl->wLength;
++
++			*temp = cpu_to_le16(DBGP_REQ_LEN);
++			length = DBGP_REQ_LEN;
++		}
++	}
++
++
+ 	if (request == USB_REQ_GET_DESCRIPTOR) {
+ 		switch (value>>8) {
+ 		case USB_DT_DEVICE:
+diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
+index b95900168a6b1..af0b34763326d 100644
+--- a/drivers/usb/gadget/legacy/inode.c
++++ b/drivers/usb/gadget/legacy/inode.c
+@@ -113,6 +113,8 @@ enum ep0_state {
+ /* enough for the whole queue: most events invalidate others */
+ #define	N_EVENT			5
+ 
++#define RBUF_SIZE		256
++
+ struct dev_data {
+ 	spinlock_t			lock;
+ 	atomic_t			count;
+@@ -146,7 +148,7 @@ struct dev_data {
+ 	struct dentry			*dentry;
+ 
+ 	/* except this scratch i/o buffer for ep0 */
+-	u8				rbuf [256];
++	u8				rbuf[RBUF_SIZE];
+ };
+ 
+ static inline void get_dev (struct dev_data *data)
+@@ -1332,6 +1334,18 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+ 	u16				w_value = le16_to_cpu(ctrl->wValue);
+ 	u16				w_length = le16_to_cpu(ctrl->wLength);
+ 
++	if (w_length > RBUF_SIZE) {
++		if (ctrl->bRequestType == USB_DIR_OUT) {
++			return value;
++		} else {
++			/* Cast away the const, we are going to overwrite on purpose. */
++			__le16 *temp = (__le16 *)&ctrl->wLength;
++
++			*temp = cpu_to_le16(RBUF_SIZE);
++			w_length = RBUF_SIZE;
++		}
++	}
++
+ 	spin_lock (&dev->lock);
+ 	dev->setup_abort = 0;
+ 	if (dev->state == STATE_DEV_UNCONNECTED) {
+diff --git a/fs/signalfd.c b/fs/signalfd.c
+index 270221fcef42c..9c5fa0ab5e0fe 100644
+--- a/fs/signalfd.c
++++ b/fs/signalfd.c
+@@ -34,17 +34,7 @@
+ 
+ void signalfd_cleanup(struct sighand_struct *sighand)
+ {
+-	wait_queue_head_t *wqh = &sighand->signalfd_wqh;
+-	/*
+-	 * The lockless check can race with remove_wait_queue() in progress,
+-	 * but in this case its caller should run under rcu_read_lock() and
+-	 * sighand_cachep is SLAB_DESTROY_BY_RCU, we can safely return.
+-	 */
+-	if (likely(!waitqueue_active(wqh)))
+-		return;
+-
+-	/* wait_queue_t->func(POLLFREE) should do remove_wait_queue() */
+-	wake_up_poll(wqh, POLLHUP | POLLFREE);
++	wake_up_pollfree(&sighand->signalfd_wqh);
+ }
+ 
+ struct signalfd_ctx {
+diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
+index 6ccfd47157d37..2914220e975cd 100644
+--- a/fs/tracefs/inode.c
++++ b/fs/tracefs/inode.c
+@@ -162,6 +162,77 @@ struct tracefs_fs_info {
+ 	struct tracefs_mount_opts mount_opts;
+ };
+ 
++static void change_gid(struct dentry *dentry, kgid_t gid)
++{
++	if (!dentry->d_inode)
++		return;
++	dentry->d_inode->i_gid = gid;
++}
++
++/*
++ * Taken from d_walk, but without he need for handling renames.
++ * Nothing can be renamed while walking the list, as tracefs
++ * does not support renames. This is only called when mounting
++ * or remounting the file system, to set all the files to
++ * the given gid.
++ */
++static void set_gid(struct dentry *parent, kgid_t gid)
++{
++	struct dentry *this_parent;
++	struct list_head *next;
++
++	this_parent = parent;
++	spin_lock(&this_parent->d_lock);
++
++	change_gid(this_parent, gid);
++repeat:
++	next = this_parent->d_subdirs.next;
++resume:
++	while (next != &this_parent->d_subdirs) {
++		struct list_head *tmp = next;
++		struct dentry *dentry = list_entry(tmp, struct dentry, d_child);
++		next = tmp->next;
++
++		spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
++
++		change_gid(dentry, gid);
++
++		if (!list_empty(&dentry->d_subdirs)) {
++			spin_unlock(&this_parent->d_lock);
++			spin_release(&dentry->d_lock.dep_map, 1, _RET_IP_);
++			this_parent = dentry;
++			spin_acquire(&this_parent->d_lock.dep_map, 0, 1, _RET_IP_);
++			goto repeat;
++		}
++		spin_unlock(&dentry->d_lock);
++	}
++	/*
++	 * All done at this level ... ascend and resume the search.
++	 */
++	rcu_read_lock();
++ascend:
++	if (this_parent != parent) {
++		struct dentry *child = this_parent;
++		this_parent = child->d_parent;
++
++		spin_unlock(&child->d_lock);
++		spin_lock(&this_parent->d_lock);
++
++		/* go into the first sibling still alive */
++		do {
++			next = child->d_child.next;
++			if (next == &this_parent->d_subdirs)
++				goto ascend;
++			child = list_entry(next, struct dentry, d_child);
++		} while (unlikely(child->d_flags & DCACHE_DENTRY_KILLED));
++		rcu_read_unlock();
++		goto resume;
++	}
++	rcu_read_unlock();
++	spin_unlock(&this_parent->d_lock);
++	return;
++}
++
+ static int tracefs_parse_options(char *data, struct tracefs_mount_opts *opts)
+ {
+ 	substring_t args[MAX_OPT_ARGS];
+@@ -194,6 +265,7 @@ static int tracefs_parse_options(char *data, struct tracefs_mount_opts *opts)
+ 			if (!gid_valid(gid))
+ 				return -EINVAL;
+ 			opts->gid = gid;
++			set_gid(tracefs_mount->mnt_root, gid);
+ 			break;
+ 		case Opt_mode:
+ 			if (match_octal(&args[0], &option))
+@@ -411,6 +483,8 @@ struct dentry *tracefs_create_file(const char *name, umode_t mode,
+ 	inode->i_mode = mode;
+ 	inode->i_fop = fops ? fops : &tracefs_file_operations;
+ 	inode->i_private = data;
++	inode->i_uid = d_inode(dentry->d_parent)->i_uid;
++	inode->i_gid = d_inode(dentry->d_parent)->i_gid;
+ 	d_instantiate(dentry, inode);
+ 	fsnotify_create(dentry->d_parent->d_inode, dentry);
+ 	return end_creating(dentry);
+@@ -433,6 +507,8 @@ static struct dentry *__create_dir(const char *name, struct dentry *parent,
+ 	inode->i_mode = S_IFDIR | S_IRWXU | S_IRUSR| S_IRGRP | S_IXUSR | S_IXGRP;
+ 	inode->i_op = ops;
+ 	inode->i_fop = &simple_dir_operations;
++	inode->i_uid = d_inode(dentry->d_parent)->i_uid;
++	inode->i_gid = d_inode(dentry->d_parent)->i_gid;
+ 
+ 	/* directory inodes start off with i_nlink == 2 (for "." entry) */
+ 	inc_nlink(inode);
+diff --git a/include/linux/hid.h b/include/linux/hid.h
+index 6adea5a397245..a93f1218710f0 100644
+--- a/include/linux/hid.h
++++ b/include/linux/hid.h
+@@ -754,6 +754,22 @@ struct hid_ll_driver {
+ 	int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype);
+ };
+ 
++extern struct hid_ll_driver i2c_hid_ll_driver;
++extern struct hid_ll_driver hidp_hid_driver;
++extern struct hid_ll_driver uhid_hid_driver;
++extern struct hid_ll_driver usb_hid_driver;
++
++static inline bool hid_is_using_ll_driver(struct hid_device *hdev,
++		struct hid_ll_driver *driver)
++{
++	return hdev->ll_driver == driver;
++}
++
++static inline bool hid_is_usb(struct hid_device *hdev)
++{
++	return hid_is_using_ll_driver(hdev, &usb_hid_driver);
++}
++
+ #define	PM_HINT_FULLON	1<<5
+ #define PM_HINT_NORMAL	1<<1
+ 
+diff --git a/include/linux/wait.h b/include/linux/wait.h
+index 513b36f04dfd8..419b5b2bf547d 100644
+--- a/include/linux/wait.h
++++ b/include/linux/wait.h
+@@ -151,6 +151,7 @@ void __wake_up_locked_key(wait_queue_head_t *q, unsigned int mode, void *key);
+ void __wake_up_sync_key(wait_queue_head_t *q, unsigned int mode, int nr, void *key);
+ void __wake_up_locked(wait_queue_head_t *q, unsigned int mode, int nr);
+ void __wake_up_sync(wait_queue_head_t *q, unsigned int mode, int nr);
++void __wake_up_pollfree(wait_queue_head_t *wq_head);
+ void __wake_up_bit(wait_queue_head_t *, void *, int);
+ int __wait_on_bit(wait_queue_head_t *, struct wait_bit_queue *, wait_bit_action_f *, unsigned);
+ int __wait_on_bit_lock(wait_queue_head_t *, struct wait_bit_queue *, wait_bit_action_f *, unsigned);
+@@ -185,6 +186,31 @@ wait_queue_head_t *bit_waitqueue(void *, int);
+ #define wake_up_interruptible_sync_poll(x, m)				\
+ 	__wake_up_sync_key((x), TASK_INTERRUPTIBLE, 1, (void *) (m))
+ 
++/**
++ * wake_up_pollfree - signal that a polled waitqueue is going away
++ * @wq_head: the wait queue head
++ *
++ * In the very rare cases where a ->poll() implementation uses a waitqueue whose
++ * lifetime is tied to a task rather than to the 'struct file' being polled,
++ * this function must be called before the waitqueue is freed so that
++ * non-blocking polls (e.g. epoll) are notified that the queue is going away.
++ *
++ * The caller must also RCU-delay the freeing of the wait_queue_head, e.g. via
++ * an explicit synchronize_rcu() or call_rcu(), or via SLAB_DESTROY_BY_RCU.
++ */
++static inline void wake_up_pollfree(wait_queue_head_t *wq_head)
++{
++	/*
++	 * For performance reasons, we don't always take the queue lock here.
++	 * Therefore, we might race with someone removing the last entry from
++	 * the queue, and proceed while they still hold the queue lock.
++	 * However, rcu_read_lock() is required to be held in such cases, so we
++	 * can safely proceed with an RCU-delayed free.
++	 */
++	if (waitqueue_active(wq_head))
++		__wake_up_pollfree(wq_head);
++}
++
+ #define ___wait_cond_timeout(condition)					\
+ ({									\
+ 	bool __cond = (condition);					\
+diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c
+index f15d6b6a538a9..675228037d12a 100644
+--- a/kernel/sched/wait.c
++++ b/kernel/sched/wait.c
+@@ -10,6 +10,7 @@
+ #include <linux/wait.h>
+ #include <linux/hash.h>
+ #include <linux/kthread.h>
++#include <linux/poll.h>
+ 
+ void __init_waitqueue_head(wait_queue_head_t *q, const char *name, struct lock_class_key *key)
+ {
+@@ -156,6 +157,13 @@ void __wake_up_sync(wait_queue_head_t *q, unsigned int mode, int nr_exclusive)
+ }
+ EXPORT_SYMBOL_GPL(__wake_up_sync);	/* For internal use only */
+ 
++void __wake_up_pollfree(wait_queue_head_t *wq_head)
++{
++	__wake_up(wq_head, TASK_NORMAL, 0, (void *)(POLLHUP | POLLFREE));
++	/* POLLFREE must have cleared the queue. */
++	WARN_ON_ONCE(waitqueue_active(wq_head));
++}
++
+ /*
+  * Note: we use "set_current_state()" _after_ the wait-queue add,
+  * because we need a memory barrier there on SMP, so that any
+diff --git a/mm/backing-dev.c b/mm/backing-dev.c
+index f705c58b320b8..08b4c951f39e5 100644
+--- a/mm/backing-dev.c
++++ b/mm/backing-dev.c
+@@ -865,6 +865,13 @@ void bdi_unregister(struct backing_dev_info *bdi)
+ 	wb_shutdown(&bdi->wb);
+ 	cgwb_bdi_destroy(bdi);
+ 
++	/*
++	 * If this BDI's min ratio has been set, use bdi_set_min_ratio() to
++	 * update the global bdi_min_ratio.
++	 */
++	if (bdi->min_ratio)
++		bdi_set_min_ratio(bdi, 0);
++
+ 	if (bdi->dev) {
+ 		bdi_debug_unregister(bdi);
+ 		device_unregister(bdi->dev);
+diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
+index 9ec37c6c8c4aa..00f25e54119cf 100644
+--- a/net/bluetooth/hidp/core.c
++++ b/net/bluetooth/hidp/core.c
+@@ -734,7 +734,7 @@ static void hidp_stop(struct hid_device *hid)
+ 	hid->claimed = 0;
+ }
+ 
+-static struct hid_ll_driver hidp_hid_driver = {
++struct hid_ll_driver hidp_hid_driver = {
+ 	.parse = hidp_parse,
+ 	.start = hidp_start,
+ 	.stop = hidp_stop,
+@@ -743,6 +743,7 @@ static struct hid_ll_driver hidp_hid_driver = {
+ 	.raw_request = hidp_raw_request,
+ 	.output_report = hidp_output_report,
+ };
++EXPORT_SYMBOL_GPL(hidp_hid_driver);
+ 
+ /* This function sets up the hid device. It does not add it
+    to the HID system. That is done in hidp_add_connection(). */
+diff --git a/net/core/neighbour.c b/net/core/neighbour.c
+index 17997902d3167..b55306e7edd4a 100644
+--- a/net/core/neighbour.c
++++ b/net/core/neighbour.c
+@@ -597,7 +597,7 @@ struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl,
+ 
+ 	ASSERT_RTNL();
+ 
+-	n = kmalloc(sizeof(*n) + key_len, GFP_KERNEL);
++	n = kzalloc(sizeof(*n) + key_len, GFP_KERNEL);
+ 	if (!n)
+ 		goto out;
+ 
+diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
+index c90dc2fd13a7c..00a0f0476a543 100644
+--- a/net/nfc/netlink.c
++++ b/net/nfc/netlink.c
+@@ -1366,8 +1366,10 @@ static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
+ {
+ 	struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+ 
+-	nfc_device_iter_exit(iter);
+-	kfree(iter);
++	if (iter) {
++		nfc_device_iter_exit(iter);
++		kfree(iter);
++	}
+ 
+ 	return 0;
+ }
+diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c
+index ac0a40b9ba1e8..3fd7f67e701e4 100644
+--- a/sound/core/control_compat.c
++++ b/sound/core/control_compat.c
+@@ -281,6 +281,7 @@ static int copy_ctl_value_to_user(void __user *userdata,
+ 				  struct snd_ctl_elem_value *data,
+ 				  int type, int count)
+ {
++	struct snd_ctl_elem_value32 __user *data32 = userdata;
+ 	int i, size;
+ 
+ 	if (type == SNDRV_CTL_ELEM_TYPE_BOOLEAN ||
+@@ -297,6 +298,8 @@ static int copy_ctl_value_to_user(void __user *userdata,
+ 		if (copy_to_user(valuep, data->value.bytes.data, size))
+ 			return -EFAULT;
+ 	}
++	if (copy_to_user(&data32->id, &data->id, sizeof(data32->id)))
++		return -EFAULT;
+ 	return 0;
+ }
+ 
+diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
+index 1d1faf1925173..593791d9a334f 100644
+--- a/sound/core/oss/pcm_oss.c
++++ b/sound/core/oss/pcm_oss.c
+@@ -172,7 +172,7 @@ snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
+  *
+  * Return the maximum value for field PAR.
+  */
+-static unsigned int
++static int
+ snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
+ 			   snd_pcm_hw_param_t var, int *dir)
+ {
+@@ -707,18 +707,24 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
+ 				   struct snd_pcm_hw_params *oss_params,
+ 				   struct snd_pcm_hw_params *slave_params)
+ {
+-	size_t s;
+-	size_t oss_buffer_size, oss_period_size, oss_periods;
+-	size_t min_period_size, max_period_size;
++	ssize_t s;
++	ssize_t oss_buffer_size;
++	ssize_t oss_period_size, oss_periods;
++	ssize_t min_period_size, max_period_size;
+ 	struct snd_pcm_runtime *runtime = substream->runtime;
+ 	size_t oss_frame_size;
+ 
+ 	oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) *
+ 			 params_channels(oss_params) / 8;
+ 
++	oss_buffer_size = snd_pcm_hw_param_value_max(slave_params,
++						     SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
++						     NULL);
++	if (oss_buffer_size <= 0)
++		return -EINVAL;
+ 	oss_buffer_size = snd_pcm_plug_client_size(substream,
+-						   snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size;
+-	if (!oss_buffer_size)
++						   oss_buffer_size * oss_frame_size);
++	if (oss_buffer_size <= 0)
+ 		return -EINVAL;
+ 	oss_buffer_size = rounddown_pow_of_two(oss_buffer_size);
+ 	if (atomic_read(&substream->mmap_count)) {
+@@ -755,7 +761,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
+ 
+ 	min_period_size = snd_pcm_plug_client_size(substream,
+ 						   snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
+-	if (min_period_size) {
++	if (min_period_size > 0) {
+ 		min_period_size *= oss_frame_size;
+ 		min_period_size = roundup_pow_of_two(min_period_size);
+ 		if (oss_period_size < min_period_size)
+@@ -764,7 +770,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
+ 
+ 	max_period_size = snd_pcm_plug_client_size(substream,
+ 						   snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
+-	if (max_period_size) {
++	if (max_period_size > 0) {
+ 		max_period_size *= oss_frame_size;
+ 		max_period_size = rounddown_pow_of_two(max_period_size);
+ 		if (oss_period_size > max_period_size)
+@@ -777,7 +783,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
+ 		oss_periods = substream->oss.setup.periods;
+ 
+ 	s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
+-	if (runtime->oss.maxfrags && s > runtime->oss.maxfrags)
++	if (s > 0 && runtime->oss.maxfrags && s > runtime->oss.maxfrags)
+ 		s = runtime->oss.maxfrags;
+ 	if (oss_periods > s)
+ 		oss_periods = s;
+@@ -903,8 +909,15 @@ static int snd_pcm_oss_change_params_locked(struct snd_pcm_substream *substream)
+ 		err = -EINVAL;
+ 		goto failure;
+ 	}
+-	choose_rate(substream, sparams, runtime->oss.rate);
+-	snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL);
++
++	err = choose_rate(substream, sparams, runtime->oss.rate);
++	if (err < 0)
++		goto failure;
++	err = snd_pcm_hw_param_near(substream, sparams,
++				    SNDRV_PCM_HW_PARAM_CHANNELS,
++				    runtime->oss.channels, NULL);
++	if (err < 0)
++		goto failure;
+ 
+ 	format = snd_pcm_oss_format_from(runtime->oss.format);
+ 
+@@ -2012,7 +2025,7 @@ static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsign
+ 	if (runtime->oss.subdivision || runtime->oss.fragshift)
+ 		return -EINVAL;
+ 	fragshift = val & 0xffff;
+-	if (fragshift >= 31)
++	if (fragshift >= 25) /* should be large enough */
+ 		return -EINVAL;
+ 	runtime->oss.fragshift = fragshift;
+ 	runtime->oss.maxfrags = (val >> 16) & 0xffff;