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android_kernel_oneplus_msm8998/drivers
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Guenter Roeck 0a007f74b8 usb: hub: Wait for connection to be reestablished after port reset 
commit 22547c4cc4fe20698a6a85a55b8788859134b8e4 upstream.

On a system with a defective USB device connected to an USB hub,
an endless sequence of port connect events was observed. The sequence
of events as observed is as follows:

- Port reports connected event (port status=USB_PORT_STAT_CONNECTION).
- Event handler debounces port and resets it by calling hub_port_reset().
- hub_port_reset() calls hub_port_wait_reset() to wait for the reset
  to complete.
- The reset completes, but USB_PORT_STAT_CONNECTION is not immediately
  set in the port status register.
- hub_port_wait_reset() returns -ENOTCONN.
- Port initialization sequence is aborted.
- A few milliseconds later, the port again reports a connected event,
  and the sequence repeats.

This continues either forever or, randomly, stops if the connection
is already re-established when the port status is read. It results in
a high rate of udev events. This in turn destabilizes userspace since
the above sequence holds the device mutex pretty much continuously
and prevents userspace from actually reading the device status.

To prevent the problem from happening, let's wait for the connection
to be re-established after a port reset. If the device was actually
disconnected, the code will still return an error, but it will do so
only after the long reset timeout.

Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 07:14:37 +02:00
..
accessibility
acpi ACPI: Do not create a platform_device for IOAPIC/IOxAPIC 2017-04-08 09:53:31 +02:00
amba
android ANDROID: binder: Clear binder and cookie when setting handle in flat binder struct 2016-11-10 16:36:33 +01:00
ata libata: apply MAX_SEC_1024 to all CX1-JB*-HP devices 2017-02-09 08:02:45 +01:00
atm
auxdisplay
base base/memory, hotplug: fix a kernel oops in show_valid_zones() 2017-02-09 08:02:47 +01:00
bcma bcma: use (get|put)_device when probing/removing device driver 2017-03-12 06:37:30 +01:00
block loop: fix LO_FLAGS_PARTSCAN hang 2017-03-12 06:37:27 +01:00
bluetooth Bluetooth: Add another AR3012 04ca:3018 device 2017-03-15 09:57:11 +08:00
bus bus: vexpress-config: fix device reference leak 2017-01-19 20:17:22 +01:00
cdrom
char tpm_tis: Use devm_free_irq not free_irq 2017-03-26 12:13:18 +02:00
clk clk: imx31: fix rewritten input argument of mx31_clocks_init() 2017-01-12 11:22:49 +01:00
clocksource clocksource/exynos_mct: Clear interrupt when cpu is shut down 2017-01-26 08:23:48 +01:00
connector connector: bump skb->users before callback invocation 2016-01-04 21:46:45 -05:00
cpufreq cpufreq: Restore policy min/max limits on CPU online 2017-03-30 09:35:18 +02:00
cpuidle ARM: cpuidle: Fix error return code 2016-10-16 17:36:15 +02:00
crypto crypto: caam - fix RNG deinstantiation error checking 2017-04-18 07:14:36 +02:00
dca
devfreq
dio
dma dmaengine: ipu: Make sure the interrupt routine checks all interrupts. 2017-03-12 06:37:30 +01:00
dma-buf
edac EDAC: Increment correct counter in edac_inc_ue_error() 2016-09-07 08:32:41 +02:00
eisa
extcon extcon: max77843: Use correct size for reading the interrupt register 2016-05-04 14:48:54 -07:00
firewire firewire: net: fix fragmented datagram_size off-by-one 2016-11-10 16:36:35 +01:00
firmware efi: Expose non-blocking set_variable() wrapper to efivars 2016-05-04 14:48:49 -07:00
fmc
fpga
gpio gpio: mpc8xxx: Correct irq handler function 2016-10-28 03:01:25 -04:00
gpu drm/i915: Stop using RP_DOWN_EI on Baytrail 2017-04-18 07:14:34 +02:00
hid HID: wacom: Fix poor prox handling in 'wacom_pl_irq' 2017-02-09 08:02:46 +01:00
hsi
hv Drivers: hv: avoid vfree() on crash 2017-03-26 12:13:18 +02:00
hwmon hwmon: (g762) Fix overflows and crash seen when writing limit attributes 2017-01-12 11:22:48 +01:00
hwspinlock drivers/hwspinlock: fix race between radix tree insertion and lookup 2016-02-25 12:01:23 -08:00
hwtracing intel_th: Fix a deadlock in modprobing 2016-08-10 11:49:30 +02:00
i2c i2c: fix kernel memory disclosure in dev interface 2017-01-19 20:17:20 +01:00
ide
idle intel_idle: Support for Intel Xeon Phi Processor x200 Product Family 2016-09-15 08:27:46 +02:00
iio iio: bmg160: reset chip when probing 2017-04-12 12:38:33 +02:00
infiniband IB/srp: Fix race conditions related to task management 2017-03-15 09:57:13 +08:00
input Input: sur40 - validate number of endpoints before using them 2017-03-30 09:35:15 +02:00
iommu iommu/vt-d: Fix NULL pointer dereference in device_to_iommu 2017-03-30 09:35:18 +02:00
ipack
irqchip irqchip/bcm7038-l1: Implement irq_cpu_offline() callback 2017-01-12 11:22:49 +01:00
isdn isdn/gigaset: fix NULL-deref at probe 2017-03-26 12:13:19 +02:00
leds
lguest
lightnvm lightnvm: put bio before return 2016-09-24 10:07:35 +02:00
macintosh
mailbox
mcb mcb: Fixed bar number assignment for the gdd 2016-06-01 12:15:53 -07:00
md blk: Ensure users for current->bio_list can see the full list. 2017-04-08 09:53:32 +02:00
media uvcvideo: uvc_scan_fallback() for webcams with broken chain 2017-03-30 09:35:20 +02:00
memory memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing 2016-07-27 09:47:35 -07:00
memstick memstick: rtsx_usb_ms: Manage runtime PM when accessing the device 2016-10-28 03:01:35 -04:00
message
mfd mfd: core: Fix device reference leak in mfd_clone_cell 2016-11-26 09:54:53 +01:00
misc mei: bus: fix mei_cldev_enable KDoc 2017-01-12 11:22:47 +01:00
mmc mmc: sdhci: Do not disable interrupts while waiting for clock 2017-03-30 09:35:18 +02:00
mtd mtd: bcm47xxpart: fix parsing first block after aligned TRX 2017-04-18 07:14:35 +02:00
net igb: add i211 to i210 PHY workaround 2017-03-30 09:35:19 +02:00
nfc mei: bus: fix received data size check in NFC fixup 2016-11-18 10:48:36 +01:00
ntb ntb_transport: Pick an unused queue 2017-02-23 17:43:10 +01:00
nubus
nvdimm nfit, libnvdimm: fix interleave set cookie calculation 2017-03-18 19:09:58 +08:00
nvme nvme: Call pci_disable_device on the error path. 2016-09-15 08:27:51 +02:00
nvmem nvmem: mxs-ocotp: fix buffer overflow in read 2016-05-11 11:21:21 +02:00
of of: silence warnings due to max() usage 2016-11-15 07:46:39 +01:00
oprofile
parisc parisc iommu: fix panic due to trying to allocate too large region 2015-12-12 16:07:25 +01:00
parport parport: fix attempt to write duplicate procfiles 2017-03-30 09:35:17 +02:00
pci PCI: Do any VF BAR updates before enabling the BARs 2017-03-30 09:35:20 +02:00
pcmcia pcmcia: db1xxx_ss: fix last irq_to_gpio user 2016-04-20 15:42:09 +09:00
perf drivers/perf: arm_pmu: Fix leak in error path 2016-10-07 15:23:41 +02:00
phy phy: core: fix wrong err handle for phy_power_on 2016-03-03 15:07:28 -08:00
pinctrl pinctrl: qcom: Don't clear status bit on irq_unmask 2017-03-31 09:49:53 +02:00
platform goldfish: Sanitize the broken interrupt handler 2017-02-26 11:07:51 +01:00
pnp PNP: Add Broadwell to Intel MCH size workaround 2016-08-16 09:30:48 +02:00
power power: reset: at91-poweroff: timely shutdown LPDDR memories 2017-04-08 09:53:32 +02:00
powercap powercap / RAPL: fix BIOS lock check 2015-12-12 02:31:11 +01:00
pps pps: do not crash when failed to register 2016-08-10 11:49:25 +02:00
ps3
ptp
pwm pwm: pca9685: Fix period change with same duty cycle 2017-03-15 09:57:14 +08:00
rapidio
ras
regulator regulator: Fix regulator_summary for deviceless consumers 2017-03-12 06:37:25 +01:00
remoteproc remoteproc: Fix potential race condition in rproc_add 2016-08-20 18:09:20 +02:00
reset
rpmsg
rtc rtc: s35390a: improve irq handling 2017-04-08 09:53:32 +02:00
s390 s390/zcrypt: Introduce CEX6 toleration 2017-03-30 09:35:20 +02:00
sbus
scsi scsi: libsas: fix ata xfer length 2017-04-08 09:53:31 +02:00
sfi
sh drivers: sh: Restore legacy clock domain on SuperH platforms 2016-03-09 15:34:49 -08:00
sn
soc soc: qcom/spm: shut up uninitialized variable warning 2016-09-24 10:07:42 +02:00
spi spi: mvebu: fix baudrate calculation for armada variant 2017-01-15 13:41:36 +01:00
spmi
ssb ssb: Fix error routine when fallback SPROM fails 2017-01-09 08:07:42 +01:00
staging staging: android: ashmem: lseek failed due to no FMODE_LSEEK. 2017-04-12 12:38:33 +02:00
target target: Fix VERIFY_16 handling in sbc_parse_cdb 2017-03-26 12:13:19 +02:00
tc
thermal thermal: hwmon: Properly report critical temperature in sysfs 2017-01-09 08:07:44 +01:00
thunderbolt thunderbolt: Fix double free of drom buffer 2016-06-01 12:15:53 -07:00
tty tty/serial: atmel: fix TX path in atmel_console_write() 2017-04-08 09:53:31 +02:00
uio uio: fix dmem_region_start computation 2016-10-31 04:13:59 -06:00
usb usb: hub: Wait for connection to be reestablished after port reset 2017-04-18 07:14:37 +02:00
uwb uwb: hwa-rc: fix NULL-deref at probe 2017-03-30 09:35:17 +02:00
vfio vfio/spapr: Postpone allocation of userspace version of TCE table 2017-03-30 09:35:20 +02:00
vhost vhost/scsi: fix reuse of &vq->iov[out] in response 2016-09-15 08:27:53 +02:00
video fbcon: Fix vc attr at deinit 2017-03-30 09:35:20 +02:00
virt
virtio virtio_balloon: init 1st buffer in stats vq 2017-03-31 09:49:53 +02:00
vlynq
vme vme: Fix wrong pointer utilization in ca91cx42_slave_get 2017-01-19 20:17:21 +01:00
w1 w1: ds2490: USB transfer buffers need to be DMAable 2017-03-12 06:37:29 +01:00
watchdog watchdog: rc32434_wdt: fix ioctl error handling 2016-04-12 09:08:54 -07:00
xen xen/acpi: upload PM state from init-domain to Xen 2017-03-30 09:35:18 +02:00
zorro
Kconfig
Makefile