Hans de Goede
cec4c3810b
Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state ...
[ Upstream commit e479187748a8f151a85116a7091c599b121fdea5 ]
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
ACPI: scan: Fix a memory leak in an error handling path
2021-05-19 10:08:30 +02:00
amba: Fix resource leak for drivers without .remove
2021-03-04 10:26:32 +01:00
ata: libahci_platform: fix IRQ check
2021-05-14 09:44:24 +02:00
atm: idt77252: fix null-ptr-dereference
2021-03-30 14:35:21 +02:00
auxdisplay: ht16k33: Fix refresh rate handling
2021-03-04 10:26:30 +01:00
PM: runtime: Fix unpaired parent child_count for force_resume
2021-05-19 10:08:20 +02:00
nbd: Fix NULL pointer in flush_workqueue
2021-05-19 10:08:30 +02:00
Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl
2021-03-07 12:20:44 +01:00
bus: qcom: Put child node before return
2021-05-14 09:44:19 +02:00
tpm, tpm_tis: Reserve locality in tpm_tis_resume()
2021-05-19 10:08:20 +02:00
clk: exynos7: Mark aclk_fsys1_200 as critical
2021-05-19 10:08:33 +02:00
clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined
2021-03-04 10:26:29 +01:00
counter: stm32-timer-cnt: fix ceiling miss-alignment with reload register
2021-04-14 08:24:09 +02:00
cpufreq: armada-37xx: Fix determining base CPU frequency
2021-05-14 09:44:21 +02:00
crypto: qat - Fix a double free in adf_create_ring
2021-05-14 09:44:20 +02:00
PM / devfreq: Use more accurate returned new_freq as resume_freq
2021-05-14 09:44:20 +02:00
dmaengine: dw-edma: Fix crash on loading/unloading driver
2021-05-22 11:38:28 +02:00
dmabuf: fix use-after-free of dmabuf's file->f_inode
2021-01-12 20:16:23 +01:00
extcon: arizona: Fix various races on driver unbind
2021-05-11 14:04:09 +02:00
firewire: nosy: Fix a use-after-free bug in nosy_ioctl()
2021-04-07 14:47:43 +02:00
firmware: qcom-scm: Fix QCOM_SCM configuration
2021-05-14 09:44:22 +02:00
gpio: omap: Save and restore sysconfig
2021-04-28 13:19:14 +02:00
drm/i915: Avoid div-by-zero on gen2
2021-05-19 10:08:29 +02:00
HID: plantronics: Workaround for double volume key presses
2021-05-14 09:44:26 +02:00
HSI: core: fix resource leaks in hsi_add_client_from_dt()
2021-05-14 09:44:25 +02:00
Drivers: hv: vmbus: Increase wait time for VMbus unload
2021-05-14 09:44:22 +02:00
hwmon: (occ) Fix poll rate limiting
2021-05-19 10:08:30 +02:00
intel_th: pci: Add Alder Lake-M support
2021-05-11 14:04:15 +02:00
i2c: bail out early when RDWR parameters are wrong
2021-05-19 10:08:21 +02:00
Revert "i3c master: fix missing destroy_workqueue() on error in i3c_master_register"
2021-05-14 09:44:15 +02:00
scsi: ide: Do not set the RQF_PREEMPT flag for sense requests
2021-01-12 20:16:09 +01:00
iio: tsl2583: Fix division by a zero lux_val
2021-05-19 10:08:31 +02:00
RDMA/bnxt_re: Fix a double free in bnxt_qplib_alloc_res
2021-05-14 09:44:32 +02:00
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: core: fix error return code of icc_link_destroy()
2021-04-16 11:46:37 +02:00
iommu/amd: Remove performance counter pre-initialization test
2021-05-19 10:08:22 +02:00
irqchip/gic-v3: Fix OF_BAD_ADDR error handling
2021-05-14 09:44:20 +02:00
isdn: capi: fix mismatched prototypes
2021-05-22 11:38:27 +02:00
leds: trigger: fix potential deadlock with libata
2021-02-03 23:25:58 +01:00
lightnvm: fix memory leak when submit fails
2021-01-27 11:47:53 +01:00
md: Fix missing unused status line of /proc/mdstat
2021-05-14 09:44:13 +02:00
media: v4l2-ctrls.c: fix race condition in hdl->requests list
2021-05-14 09:44:24 +02:00
memory: pl353: fix mask of ECC page_size config register
2021-05-14 09:44:19 +02:00
mfd: stm32-timers: Avoid clearing auto reload register
2021-05-14 09:44:25 +02:00
kgdb: fix gcc-11 warning on indentation
2021-05-22 11:38:27 +02:00
mmc: sdhci-pci: Add PCI IDs for Intel LKF
2021-05-11 14:04:10 +02:00
mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init
2021-05-14 09:44:20 +02:00
virtio_net: Do not pull payload in skb->head
2021-05-22 11:38:28 +02:00
nfc: pn533: prevent potential memory corruption
2021-05-14 09:44:27 +02:00
libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNC
2021-04-21 12:56:16 +02:00
nvme: do not try to reconfigure APST when the controller is not live
2021-05-19 10:08:33 +02:00
nvmem: core: skip child nodes not matching binding
2021-03-04 10:26:37 +01:00
Revert "fdt: Properly handle "no-map" field in the memory region"
2021-05-14 09:44:33 +02:00
ACPI / hotplug / PCI: Fix reference count leak in enable_slot()
2021-05-22 11:38:28 +02:00
perf/arm_pmu_platform: Fix error handling
2021-05-11 14:04:06 +02:00
phy: marvell: ARMADA375_USBCLUSTER_PHY should not default to y, unconditionally
2021-05-14 09:44:19 +02:00
pinctrl: ingenic: Improve unreachable code generation
2021-05-22 11:38:27 +02:00
platform/x86: pmc_atom: Match all Beckhoff Automation baytrail boards with critclk_systems DMI table
2021-05-14 09:44:22 +02:00
power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove()
2021-05-11 14:04:11 +02:00
pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()
2021-03-04 10:26:36 +01:00
RAS/CEC: Correct ce_add_elem()'s returned values
2021-04-14 08:24:18 +02:00
regulator: bd9571mwv: Fix AVS and DVFS voltage range
2021-04-14 08:24:13 +02:00
rpmsg: qcom_glink_native: fix error return code of qcom_glink_rx_data()
2021-05-19 10:08:25 +02:00
rtc: ds1307: Fix wday settings for rx8130
2021-05-19 10:08:26 +02:00
s390/dasd: fix hanging IO request during DASD driver unbind
2021-03-17 17:03:48 +01:00
scsi: ibmvfc: Fix invalid state machine BUG_ON()
2021-05-14 09:44:25 +02:00
soc: aspeed: fix a ternary sign expansion bug
2021-05-14 09:44:23 +02:00
soundwire: stream: fix memory leak in stream config error path
2021-05-14 09:44:19 +02:00
spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()
2021-05-14 09:44:21 +02:00
spmi: spmi-pmic-arb: Fix hw_irq overflow
2021-03-04 10:26:49 +01:00
media: omap4iss: return error code when omap4iss_get() failed
2021-05-14 09:44:23 +02:00
scsi: target: pscsi: Fix warning in pscsi_complete_cmd()
2021-05-11 14:04:08 +02:00
tee: optee: do not check memref size on return from Secure World
2021-05-11 14:04:06 +02:00
thermal/core/fair share: Lock the thermal zone while looping over instances
2021-05-19 10:08:32 +02:00
serial: core: return early on unsupported ioctls
2021-05-14 09:44:22 +02:00
usb: sl811-hcd: improve misleading indentation
2021-05-22 11:38:27 +02:00
vfio/mdev: Do not allow a mdev_type to have a NULL parent pointer
2021-05-14 09:44:24 +02:00
vhost: Fix vhost_vq_reset()
2021-04-07 14:47:39 +02:00
fbdev: zero-fill colormap in fbcmap.c
2021-05-11 14:04:04 +02:00
virt: vbox: Do not use wait_event_interruptible when called from kernel context
2021-03-04 10:26:10 +01:00
watchdog: mei_wdt: request stop on unregister
2021-03-04 10:26:47 +01:00
xen/events: fix setting irq affinity
2021-04-16 11:46:39 +02:00
cec4c3810b