Wayne Lin 59593aed7e drm/dp_mst: Remove VCPI while disabling topology mgr ... [ Upstream commit 64e62bdf04 ] [Why] This patch is trying to address the issue observed when hotplug DP daisy chain monitors. e.g. src-mstb-mstb-sst -> src (unplug) mstb-mstb-sst -> src-mstb-mstb-sst (plug in again) Once unplug a DP MST capable device, driver will call drm_dp_mst_topology_mgr_set_mst() to disable MST. In this function, it cleans data of topology manager while disabling mst_state. However, it doesn't clean up the proposed_vcpis of topology manager. If proposed_vcpi is not reset, once plug in MST daisy chain monitors later, code will fail at checking port validation while trying to allocate payloads. When MST capable device is plugged in again and try to allocate payloads by calling drm_dp_update_payload_part1(), this function will iterate over all proposed virtual channels to see if any proposed VCPI's num_slots is greater than 0. If any proposed VCPI's num_slots is greater than 0 and the port which the specific virtual channel directed to is not in the topology, code then fails at the port validation. Since there are stale VCPI allocations from the previous topology enablement in proposed_vcpi[], code will fail at port validation and reurn EINVAL. [How] Clean up the data of stale proposed_vcpi[] and reset mgr->proposed_vcpis to NULL while disabling mst in drm_dp_mst_topology_mgr_set_mst(). Changes since v1: *Add on more details in commit message to describe the issue which the patch is trying to fix Signed-off-by: Wayne Lin <Wayne.Lin@amd.com> [added cc to stable] Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191205090043.7580-1-Wayne.Lin@amd.com Cc: <stable@vger.kernel.org> # v3.17+ Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-02-11 04:35:53 -08:00
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accessibility	…
acpi	ACPI / battery: Deal better with neither design nor full capacity not being reported	2020-02-11 04:35:20 -08:00
amba	ARM updates for 5.4-rc:	2019-10-23 06:26:33 -04:00
android	binder: fix log spam for existing debugfs file creation.	2020-02-01 09:34:35 +00:00
ata	libata: Fix retrieving of active qcs	2020-01-09 10:19:59 +01:00
atm	atm: eni: fix uninitialized variable warning	2020-02-01 09:34:46 +00:00
auxdisplay	It's a somewhat calmer cycle for docs this time, as the churn of the mass	2019-09-17 16:22:26 -07:00
base	PM: core: Fix handling of devices deleted during system-wide resume	2020-02-11 04:35:25 -08:00
bcma	bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size	2019-09-13 16:44:49 +03:00
block	xen/blkfront: Adjust indentation in xlvbd_alloc_gendisk	2020-01-23 08:22:54 +01:00
bluetooth	Bluetooth: btusb: Disable runtime suspend on Realtek devices	2020-02-11 04:35:09 -08:00
bus	bus: ti-sysc: Fix missing force mstandby quirk handling	2020-02-01 09:34:51 +00:00
cdrom	cdrom: respect device capabilities during opening action	2020-01-04 19:18:25 +01:00
char	ttyprintk: fix a potential deadlock in interrupt context issue	2020-02-05 21:22:41 +00:00
clk	clk: tegra: Mark fuse clock as critical	2020-02-11 04:35:43 -08:00
clocksource	clocksource: riscv: add notrace to riscv_sched_clock	2020-01-09 10:19:59 +01:00
connector	…
counter	…
cpufreq	cpufreq: Avoid creating excessively large stack frames	2020-02-11 04:35:25 -08:00
cpuidle	cpuidle: teo: Avoid using "early hits" incorrectly	2020-02-05 21:22:52 +00:00
crypto	crypto: picoxcell - adjust the position of tasklet_init and fix missed tasklet_kill	2020-02-11 04:35:31 -08:00
dax	…
dca	…
devfreq	PM / devfreq: Add new name attribute for sysfs	2020-02-05 21:22:40 +00:00
dio	…
dma	dmaengine: ti: edma: fix missed failure handling	2020-01-26 10:01:08 +01:00
dma-buf	dma-buf: Fix memory leak in sync_file_merge()	2019-12-21 11:04:48 +01:00
edac	EDAC/ghes: Fix grain calculation	2019-12-31 16:45:16 +01:00
eisa	…
extcon	extcon-intel-cht-wc: Don't reset USB data connection at probe	2020-02-01 09:34:46 +00:00
firewire	net: add annotations on hh->hh_len lockless accesses	2020-01-09 10:20:06 +01:00
firmware	firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT	2020-01-26 10:01:07 +01:00
fpga	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
fsi	fsi: core: Fix small accesses and unaligned offsets via sysfs	2019-12-31 16:45:09 +01:00
gnss	…
gpio	gpio: max77620: Add missing dependency on GPIOLIB_IRQCHIP	2020-02-01 09:34:45 +00:00
gpu	drm/dp_mst: Remove VCPI while disabling topology mgr	2020-02-11 04:35:53 -08:00
greybus	…
hid	HID: steam: Fix input device disappearing	2020-02-01 09:34:46 +00:00
hsi	HSI changes for the 5.4 series	2019-09-22 12:02:21 -07:00
hv	hv_balloon: Balloon up according to request page number	2020-02-11 04:35:21 -08:00
hwmon	hwmon: (nct7802) Fix non-working alarm on voltages	2020-01-29 16:45:30 +01:00
hwspinlock	…
hwtracing	intel_th: msu: Fix window switching without windows	2019-12-31 16:46:09 +01:00
i2c	i2c: stm32f7: report dma error during probe	2020-01-26 10:01:06 +01:00
i3c	…
ide	…
idle	…
iio	iio: st_gyro: Correct data for LSM9DS0 gyro	2020-02-01 09:34:36 +00:00
infiniband	IB/core: Fix ODP get user pages flow	2020-02-11 04:35:46 -08:00
input	Input: max77650-onkey - add of_match table	2020-02-05 21:22:49 +00:00
interconnect	interconnect: qcom: qcs404: Walk the list safely on node removal	2019-12-17 19:55:39 +01:00
iommu	iommu/amd: Support multiple PCI DMA aliases in IRQ Remapping	2020-02-01 09:34:48 +00:00
ipack	…
irqchip	irqchip: Place CONFIG_SIFIVE_PLIC into the menu	2020-01-23 08:22:55 +01:00
isdn	net: use skb_queue_empty_lockless() in poll() handlers	2019-10-28 13:33:41 -07:00
leds	led: max77650: add of_match table	2020-02-05 21:22:49 +00:00
lightnvm	…
macintosh	cpufreq: Use per-policy frequency QoS	2019-10-21 02:05:21 +02:00
mailbox	mailbox: imx: Fix Tx doorbell shutdown path	2020-01-04 19:18:30 +01:00
mcb	…
md	bcache: add readahead cache policy options via sysfs interface	2020-02-11 04:35:37 -08:00
media	media: rc: ensure lirc is initialized before registering input device	2020-02-11 04:35:36 -08:00
memory	memory: mtk-smi: Add PM suspend and resume ops	2020-01-17 19:48:59 +01:00
memstick	memstick: jmb38x_ms: Fix an error handling path in 'jmb38x_ms_probe()'	2019-10-09 11:08:03 +02:00
message	scsi: mptfusion: Fix double fetch bug in ioctl	2020-01-23 08:22:35 +01:00
mfd	mfd: rn5t618: Mark ADC control register volatile	2020-02-11 04:35:52 -08:00
misc	lkdtm/bugs: fix build error in lkdtm_UNSET_SMEP	2020-02-05 21:22:46 +00:00
mmc	mmc: sdhci-of-at91: fix memleak on clk_get failure	2020-02-11 04:35:21 -08:00
mtd	ubi: Fix an error pointer dereference in error handling code	2020-02-11 04:35:47 -08:00
mux	…
net	net/mlx5: Deprecate usage of generic TLS HW capability bit	2020-02-11 04:35:51 -08:00
nfc	NFC: pn544: Adjust indentation in pn544_hci_check_presence	2020-02-11 04:35:45 -08:00
ntb	NTB: fix IDT Kconfig typos/spellos	2019-09-23 17:20:40 -04:00
nubus	…
nvdimm	libnvdimm/btt: fix variable 'rc' set but not used	2020-01-04 19:18:12 +01:00
nvme	nvmet: Fix controller use after free	2020-02-11 04:35:08 -08:00
nvmem	nvmem: core: fix memory abort in cleanup path	2020-02-11 04:35:21 -08:00
of	of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpc	2020-02-11 04:35:25 -08:00
opp	opp: Reinitialize the list_kref before adding the static OPPs again	2019-10-23 10:58:44 +05:30
oprofile	…
parisc	parisc: Remove 32-bit DMA enforcement from sba_iommu	2019-10-14 21:44:26 +02:00
parport	parport: load lowlevel driver if ports not found	2019-12-31 16:45:25 +01:00
pci	PCI: keystone: Fix error handling when "num-viewport" DT property is not populated	2020-02-11 04:35:19 -08:00
pcmcia	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
perf	perf/imx_ddr: Add enhanced AXI ID filter support	2020-02-01 09:34:49 +00:00
phy	phy: qualcomm: Adjust indentation in read_poll_timeout	2020-02-11 04:35:45 -08:00
pinctrl	pinctrl: sunrisepoint: Add missing Interrupt Status register offset	2020-01-29 16:45:27 +01:00
platform	platform/x86: intel_scu_ipc: Fix interrupt support	2020-02-11 04:35:15 -08:00
pnp	…
power	power: supply: ltc2941-battery-gauge: fix use-after-free	2020-02-11 04:35:24 -08:00
powercap	powercap: intel_rapl: add NULL pointer check to rapl_mmio_cpu_online()	2020-01-14 20:08:18 +01:00
pps	…
ps3	…
ptp	ptp: free ptp device pin descriptors properly	2020-01-23 08:22:51 +01:00
pwm	pwm: sun4i: Fix incorrect calculation of duty_cycle/period	2020-01-26 10:01:04 +01:00
rapidio	…
ras	…
regulator	regulator: core: Add regulator_is_equal() helper	2020-02-11 04:35:48 -08:00
remoteproc	remoteproc updates for v5.4	2019-09-22 10:55:08 -07:00
reset	reset: Fix {of,devm}_reset_control_array_get kerneldoc return types	2020-01-23 08:22:43 +01:00
rpmsg	rpmsg: char: release allocated memory	2020-01-14 20:08:37 +01:00
rtc	rtc: bd70528: fix module alias to autoload module	2020-01-26 10:01:06 +01:00
s390	s390/zcrypt: move ap device reset from bus to driver code	2020-02-05 21:22:44 +00:00
sbus	…
scsi	scsi: ufs: Recheck bkops level if bkops is disabled	2020-02-11 04:35:44 -08:00
sfi	…
sh	…
siox	…
slimbus	…
soc	soc: ti: wkup_m3_ipc: Fix race condition with rproc_boot	2020-02-05 21:22:43 +00:00
soundwire	soundwire: intel: fix PDI/stream mapping for Bulk	2019-12-31 16:45:11 +01:00
spi	spi: pxa2xx: Add support for Intel Comet Lake-H	2020-02-01 09:34:48 +00:00
spmi	…
ssb	ssb: make array pwr_info_offset static const, makes object smaller	2019-09-13 17:23:18 +03:00
staging	staging: mt7621-pci: add quirks for 'E2' revision using 'soc_device_attribute'	2020-02-01 09:34:47 +00:00
target	scsi: RDMA/isert: Fix a recently introduced regression related to logout	2020-01-29 16:45:30 +01:00
tc	…
tee	tee: optee: Fix compilation issue with nommu	2020-02-05 21:22:49 +00:00
thermal	thermal: Fix deadlock in thermal thermal_zone_device_check	2019-12-13 08:43:21 +01:00
thunderbolt	thunderbolt: Power cycle the router if NVM authentication fails	2019-12-04 22:30:50 +01:00
tty	serial: imx: fix a race condition in receive path	2020-02-01 09:34:34 +00:00
uio	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
usb	usb: gadget: f_ecm: Use atomic_t to track in-flight request	2020-02-11 04:35:10 -08:00
vfio	vfio/pci: call irq_bypass_unregister_producer() before freeing irq	2019-12-21 11:04:48 +01:00
vhost	vhost/vsock: accept only packets with the right dst_cid	2020-01-04 19:19:18 +01:00
video	video/hdmi: Fix AVI bar unpack	2019-12-17 19:56:42 +01:00
virt	virt: vbox: fix memory leak in hgcm_call_preprocess_linaddr	2019-10-10 14:50:32 +02:00
virtio	virtio_balloon: Fix memory leaks on errors in virtballoon_probe()	2020-02-11 04:35:47 -08:00
visorbus	…
vlynq	…
vme	…
w1	w1: ds250x: Fix build error without CRC16	2019-10-10 15:35:41 +02:00
watchdog	watchdog: fix UAF in reboot notifier handling in watchdog core code	2020-02-11 04:35:37 -08:00
xen	xen/balloon: Support xend-based toolstack take two	2020-02-11 04:35:36 -08:00
zorro	…
Kconfig	Staging/IIO driver patches for 5.4-rc1	2019-09-18 11:05:34 -07:00
Makefile	Staging/IIO driver patches for 5.4-rc1	2019-09-18 11:05:34 -07:00