Hans de Goede cec4c3810b Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state ... [ Upstream commit e479187748 ] Some buggy BIOS-es bring up the touchscreen-controller in a stuck state where it blocks the I2C bus. Specifically this happens on the Jumper EZpad 7 tablet model. After much poking at this problem I have found that the following steps are necessary to unstuck the chip / bus: 1. Turn off the Silead chip. 2. Try to do an I2C transfer with the chip, this will fail in response to which the I2C-bus-driver will call: i2c_recover_bus() which will unstuck the I2C-bus. Note the unstuck-ing of the I2C bus only works if we first drop the chip of the bus by turning it off. 3. Turn the chip back on. On the x86/ACPI systems were this problem is seen, step 1. and 3. require making ACPI calls and dealing with ACPI Power Resources. This commit adds a workaround which runtime-suspends the chip to turn it off, leaving it up to the ACPI subsystem to deal with all the ACPI specific details. There is no good way to detect this bug, so the workaround gets activated by a new "silead,stuck-controller-bug" boolean device-property. Since this is only used on x86/ACPI, this will be set by model specific device-props set by drivers/platform/x86/touchscreen_dmi.c. Therefor this new device-property is not documented in the DT-bindings. Dmesg will contain the following messages on systems where the workaround is activated: [ 54.309029] silead_ts i2c-MSSL1680:00: [Firmware Bug]: Stuck I2C bus: please ignore the next 'controller timed out' error [ 55.373593] i2c_designware 808622C1:04: controller timed out [ 55.582186] silead_ts i2c-MSSL1680:00: Silead chip ID: 0x80360000 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210405202745.16777-1-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-22 11:38:28 +02:00
..
accessibility
acpi	ACPI: scan: Fix a memory leak in an error handling path	2021-05-19 10:08:30 +02:00
amba	amba: Fix resource leak for drivers without .remove	2021-03-04 10:26:32 +01:00
android	binder: add flag to clear buffer on txn complete	2020-12-30 11:51:35 +01:00
ata	ata: libahci_platform: fix IRQ check	2021-05-14 09:44:24 +02:00
atm	atm: idt77252: fix null-ptr-dereference	2021-03-30 14:35:21 +02:00
auxdisplay	auxdisplay: ht16k33: Fix refresh rate handling	2021-03-04 10:26:30 +01:00
base	PM: runtime: Fix unpaired parent child_count for force_resume	2021-05-19 10:08:20 +02:00
bcma
block	nbd: Fix NULL pointer in flush_workqueue	2021-05-19 10:08:30 +02:00
bluetooth	Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl	2021-03-07 12:20:44 +01:00
bus	bus: qcom: Put child node before return	2021-05-14 09:44:19 +02:00
cdrom
char	tpm, tpm_tis: Reserve locality in tpm_tis_resume()	2021-05-19 10:08:20 +02:00
clk	clk: exynos7: Mark aclk_fsys1_200 as critical	2021-05-19 10:08:33 +02:00
clocksource	clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined	2021-03-04 10:26:29 +01:00
connector
counter	counter: stm32-timer-cnt: fix ceiling miss-alignment with reload register	2021-04-14 08:24:09 +02:00
cpufreq	cpufreq: armada-37xx: Fix determining base CPU frequency	2021-05-14 09:44:21 +02:00
cpuidle
crypto	crypto: qat - Fix a double free in adf_create_ring	2021-05-14 09:44:20 +02:00
dax	device-dax/core: Fix memory leak when rmmod dax.ko	2020-12-30 11:51:46 +01:00
dca
devfreq	PM / devfreq: Use more accurate returned new_freq as resume_freq	2021-05-14 09:44:20 +02:00
dio
dma	dmaengine: dw-edma: Fix crash on loading/unloading driver	2021-05-22 11:38:28 +02:00
dma-buf	dmabuf: fix use-after-free of dmabuf's file->f_inode	2021-01-12 20:16:23 +01:00
edac	EDAC/amd64: Fix PCI component registration	2020-12-30 11:51:36 +01:00
eisa
extcon	extcon: arizona: Fix various races on driver unbind	2021-05-11 14:04:09 +02:00
firewire	firewire: nosy: Fix a use-after-free bug in nosy_ioctl()	2021-04-07 14:47:43 +02:00
firmware	firmware: qcom-scm: Fix QCOM_SCM configuration	2021-05-14 09:44:22 +02:00
fpga
fsi
gnss
gpio	gpio: omap: Save and restore sysconfig	2021-04-28 13:19:14 +02:00
gpu	drm/i915: Avoid div-by-zero on gen2	2021-05-19 10:08:29 +02:00
greybus
hid	HID: plantronics: Workaround for double volume key presses	2021-05-14 09:44:26 +02:00
hsi	HSI: core: fix resource leaks in hsi_add_client_from_dt()	2021-05-14 09:44:25 +02:00
hv	Drivers: hv: vmbus: Increase wait time for VMbus unload	2021-05-14 09:44:22 +02:00
hwmon	hwmon: (occ) Fix poll rate limiting	2021-05-19 10:08:30 +02:00
hwspinlock
hwtracing	intel_th: pci: Add Alder Lake-M support	2021-05-11 14:04:15 +02:00
i2c	i2c: bail out early when RDWR parameters are wrong	2021-05-19 10:08:21 +02:00
i3c	Revert "i3c master: fix missing destroy_workqueue() on error in i3c_master_register"	2021-05-14 09:44:15 +02:00
ide	scsi: ide: Do not set the RQF_PREEMPT flag for sense requests	2021-01-12 20:16:09 +01:00
idle
iio	iio: tsl2583: Fix division by a zero lux_val	2021-05-19 10:08:31 +02:00
infiniband	RDMA/bnxt_re: Fix a double free in bnxt_qplib_alloc_res	2021-05-14 09:44:32 +02:00
input	Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state	2021-05-22 11:38:28 +02:00
interconnect	interconnect: core: fix error return code of icc_link_destroy()	2021-04-16 11:46:37 +02:00
iommu	iommu/amd: Remove performance counter pre-initialization test	2021-05-19 10:08:22 +02:00
ipack
irqchip	irqchip/gic-v3: Fix OF_BAD_ADDR error handling	2021-05-14 09:44:20 +02:00
isdn	isdn: capi: fix mismatched prototypes	2021-05-22 11:38:27 +02:00
leds	leds: trigger: fix potential deadlock with libata	2021-02-03 23:25:58 +01:00
lightnvm	lightnvm: fix memory leak when submit fails	2021-01-27 11:47:53 +01:00
macintosh
mailbox
mcb
md	md: Fix missing unused status line of /proc/mdstat	2021-05-14 09:44:13 +02:00
media	media: v4l2-ctrls.c: fix race condition in hdl->requests list	2021-05-14 09:44:24 +02:00
memory	memory: pl353: fix mask of ECC page_size config register	2021-05-14 09:44:19 +02:00
memstick	memstick: r592: Fix error return in r592_probe()	2020-12-30 11:51:18 +01:00
message
mfd	mfd: stm32-timers: Avoid clearing auto reload register	2021-05-14 09:44:25 +02:00
misc	kgdb: fix gcc-11 warning on indentation	2021-05-22 11:38:27 +02:00
mmc	mmc: sdhci-pci: Add PCI IDs for Intel LKF	2021-05-11 14:04:10 +02:00
mtd	mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init	2021-05-14 09:44:20 +02:00
mux
net	virtio_net: Do not pull payload in skb->head	2021-05-22 11:38:28 +02:00
nfc	nfc: pn533: prevent potential memory corruption	2021-05-14 09:44:27 +02:00
ntb
nubus
nvdimm	libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNC	2021-04-21 12:56:16 +02:00
nvme	nvme: do not try to reconfigure APST when the controller is not live	2021-05-19 10:08:33 +02:00
nvmem	nvmem: core: skip child nodes not matching binding	2021-03-04 10:26:37 +01:00
of	Revert "fdt: Properly handle "no-map" field in the memory region"	2021-05-14 09:44:33 +02:00
opp
oprofile
parisc
parport
pci	ACPI / hotplug / PCI: Fix reference count leak in enable_slot()	2021-05-22 11:38:28 +02:00
pcmcia
perf	perf/arm_pmu_platform: Fix error handling	2021-05-11 14:04:06 +02:00
phy	phy: marvell: ARMADA375_USBCLUSTER_PHY should not default to y, unconditionally	2021-05-14 09:44:19 +02:00
pinctrl	pinctrl: ingenic: Improve unreachable code generation	2021-05-22 11:38:27 +02:00
platform	platform/x86: pmc_atom: Match all Beckhoff Automation baytrail boards with critclk_systems DMI table	2021-05-14 09:44:22 +02:00
pnp
power	power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove()	2021-05-11 14:04:11 +02:00
powercap
pps
ps3	powerpc/ps3: use dma_mapping_error()	2020-12-30 11:51:26 +01:00
ptp
pwm	pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()	2021-03-04 10:26:36 +01:00
rapidio
ras	RAS/CEC: Correct ce_add_elem()'s returned values	2021-04-14 08:24:18 +02:00
regulator	regulator: bd9571mwv: Fix AVS and DVFS voltage range	2021-04-14 08:24:13 +02:00
remoteproc	remoteproc: qcom: Fix potential NULL dereference in adsp_init_mmio()	2020-12-30 11:51:24 +01:00
reset
rpmsg	rpmsg: qcom_glink_native: fix error return code of qcom_glink_rx_data()	2021-05-19 10:08:25 +02:00
rtc	rtc: ds1307: Fix wday settings for rx8130	2021-05-19 10:08:26 +02:00
s390	s390/dasd: fix hanging IO request during DASD driver unbind	2021-03-17 17:03:48 +01:00
sbus
scsi	scsi: ibmvfc: Fix invalid state machine BUG_ON()	2021-05-14 09:44:25 +02:00
sfi
sh
siox
slimbus
soc	soc: aspeed: fix a ternary sign expansion bug	2021-05-14 09:44:23 +02:00
soundwire	soundwire: stream: fix memory leak in stream config error path	2021-05-14 09:44:19 +02:00
spi	spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()	2021-05-14 09:44:21 +02:00
spmi	spmi: spmi-pmic-arb: Fix hw_irq overflow	2021-03-04 10:26:49 +01:00
ssb
staging	media: omap4iss: return error code when omap4iss_get() failed	2021-05-14 09:44:23 +02:00
target	scsi: target: pscsi: Fix warning in pscsi_complete_cmd()	2021-05-11 14:04:08 +02:00
tc
tee	tee: optee: do not check memref size on return from Secure World	2021-05-11 14:04:06 +02:00
thermal	thermal/core/fair share: Lock the thermal zone while looping over instances	2021-05-19 10:08:32 +02:00
thunderbolt
tty	serial: core: return early on unsupported ioctls	2021-05-14 09:44:22 +02:00
uio
usb	usb: sl811-hcd: improve misleading indentation	2021-05-22 11:38:27 +02:00
vfio	vfio/mdev: Do not allow a mdev_type to have a NULL parent pointer	2021-05-14 09:44:24 +02:00
vhost	vhost: Fix vhost_vq_reset()	2021-04-07 14:47:39 +02:00
video	fbdev: zero-fill colormap in fbcmap.c	2021-05-11 14:04:04 +02:00
virt	virt: vbox: Do not use wait_event_interruptible when called from kernel context	2021-03-04 10:26:10 +01:00
virtio	virtio_ring: Fix two use after free bugs	2020-12-30 11:51:29 +01:00
visorbus
vlynq
vme
w1
watchdog	watchdog: mei_wdt: request stop on unregister	2021-03-04 10:26:47 +01:00
xen	xen/events: fix setting irq affinity	2021-04-16 11:46:39 +02:00
zorro
Kconfig
Makefile