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linux-sg2042
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Paul Cercueil 9b5db7aab4 Input: goodix - poll the 'buffer status' bit before reading data 
The Goodix panel triggers an interrupt on touch events. However, its
registers will contain the valid values a short time after the
interrupt, and not when it's raised. At that moment, the 'buffer status'
bit is set.

Previously, if the 'buffer status' bit was not set when the registers
were read, the data was discarded and no input event was emitted,
causing "finger down" or "finger up" events to be missed sometimes.

This went unnoticed until v4.9, as the DesignWare I2C driver commonly
used with this driver had enough latency for that bug to never trigger
until commit 2702ea7dbe ("i2c: designware: wait for disable/enable only
if necessary").

Now, in the IRQ handler we will poll (with a timeout) the 'buffer status'
bit and process the data of the panel as soon as this bit gets set.

Note that the Goodix panel will send a few spurious interrupts after the
'finger up' event, in which the 'buffer status' bit will never be set.

Cc: Bastien Nocera <hadess@hadess.net>
Cc: russianneuromancer@ya.ru
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
[hdegoede@redhat.com: Change poll loop to use jiffies,
                      add comment about typical poll time]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[dtor: rearranged control flow a bit to avoid explicit goto and double
check]
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 		2017-10-19 16:50:39 -07:00
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accessibility
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acpi ACPI / scan: Fix enumeration for special SPI and I2C devices 2017-06-21 23:14:55 +02:00
amba
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android
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ata libata: fix error checking in in ata_parse_force_one() 2017-05-31 14:26:26 -04:00
atm
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auxdisplay Merge branch 'for-4.11/libnvdimm' into for-4.12/dax 2017-04-12 21:59:01 -07:00
base driver core: add devm_device_add_group() and friends 2017-07-22 11:59:23 +02:00
bcma
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block Merge branch 'stable/for-jens-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-linus 2017-06-20 07:09:27 -06:00
bluetooth Bluetooth: hci_ldisc: Add protocol check to hci_uart_tx_wakeup() 2017-04-30 12:22:14 +02:00
bus
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cdrom scsi: introduce a result field in struct scsi_request 2017-04-20 12:16:10 -06:00
char Fix some locking and gcc optimization issues from the most recent 2017-06-23 17:33:46 -07:00
clk Allwinner clock fixes for 4.12 2017-06-14 16:48:03 -07:00
clocksource clocksource: Explicitly include linux/clocksource.h when needed 2017-06-13 17:57:16 +02:00
connector
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cpufreq Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'pm-devfreq' 2017-06-15 01:51:33 +02:00
cpuidle Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'pm-devfreq' 2017-06-15 01:51:33 +02:00
crypto virtio: fixes, cleanups, performance 2017-05-10 11:33:08 -07:00
dax device-dax: fix 'dax' device filesystem inode destruction crash 2017-06-09 08:50:49 -07:00
dca
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devfreq PM / devfreq: exynos-ppmu: Staticize event list 2017-06-12 10:12:07 +09:00
dio
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dma dmaengine: pl330: fix warning in pl330_remove 2017-06-02 11:49:44 +05:30
dma-buf dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro 2017-04-20 13:47:46 +05:30
edac EDAC, amd64: Fix reporting of Chip Select sizes on Fam17h 2017-05-03 16:27:36 +02:00
eisa
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extcon
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firewire
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firmware Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2017-06-16 17:13:06 +09:00
fmc
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fpga fpga fr br: update supported version numbers 2017-04-26 11:38:56 +02:00
fsi
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gpio gpio: acpi: Skip _AEI entries without a handler rather then aborting the scan 2017-06-29 14:55:08 +02:00
gpu Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux 2017-06-28 13:22:26 -07:00
hid Merge branch 'for-4.12/upstream-fixes' into for-linus 2017-06-20 10:52:46 +02:00
hsi hsi: Fix build regression due to netdev destructor fix. 2017-06-08 10:16:05 -04:00
hv char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
hwmon hwmon: (aspeed-pwm-tacho) make fan/pwm names start with index 1 2017-06-03 03:55:43 -07:00
hwspinlock
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hwtracing drivers/hwtracing/intel_th/msu.c: use set_memory.h header 2017-05-08 17:15:14 -07:00
i2c i2c: imx: Use correct function to write to register 2017-06-22 10:52:02 +02:00
ide ide: don't call memcpy with the same source and destination 2017-05-08 17:36:39 -04:00
idle x86/intel_idle: add Gemini Lake support 2017-05-01 23:17:37 +02:00
iio iio: buffer-dmaengine: Add missing header buffer_impl.h 2017-06-13 20:56:05 +01:00
infiniband Fixes #2 for 4.12-rc 2017-06-16 17:38:23 +09:00
input Input: goodix - poll the 'buffer status' bit before reading data 2017-10-19 16:50:39 -07:00
iommu iommu/amd: Fix interrupt remapping when disable guest_mode 2017-06-28 14:44:56 +02:00
ipack
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irqchip irqchip/mips-gic: Mark count and compare accessors notrace 2017-06-20 21:41:58 +02:00
isdn mISDN: Fix a sleep-in-atomic bug 2017-06-01 14:49:47 -04:00
leds LED fixes for 4.12-rc6 2017-06-18 08:51:35 +09:00
lguest
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lightnvm lightnvm: fix bad back free on error path 2017-05-04 07:53:04 -06:00
macintosh DeviceTree for 4.12: 2017-05-05 19:33:07 -07:00
mailbox mailbox: handle empty message in tx_tick 2017-04-27 16:20:04 +05:30
mcb
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md dm thin: do not queue freed thin mapping for next stage processing 2017-06-27 15:14:34 -04:00
media media fixes for v4.12-rc6 2017-06-15 17:37:40 +09:00
memory Merge tag 'at91-4.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into fixes 2017-06-01 17:07:31 -07:00
memstick
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message scsi: mpt: Move scsi_remove_host() out of mptscsih_remove_host() 2017-04-24 18:21:17 -04:00
mfd Merge branch 'bind_unbind' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core into next 2017-07-24 16:51:18 -07:00
misc powerpc fixes for 4.12 #8 2017-06-30 10:55:34 -07:00
mmc mmc: meson-gx: work around broken SDIO with certain WiFi chips 2017-06-12 08:58:16 +02:00
mtd mtd: nand: make nand_ooblayout_lp_hamming_ops static 2017-05-22 09:42:29 +02:00
net sfc: fix attempt to translate invalid filter ID 2017-06-29 15:59:38 -04:00
nfc nfc: fix get_unaligned_...() misuses 2017-04-17 00:42:22 +02:00
ntb ntb: no sleep in ntb_async_tx_submit 2017-06-19 14:24:41 -04:00
nubus nubus: Clean up whitespace 2017-04-20 09:54:24 +02:00
nvdimm Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm 2017-05-12 15:43:10 -07:00
nvme nvme/pci: Fix stuck nvme reset 2017-06-27 17:44:05 -06:00
nvmem ARM: SoC driver updates 2017-05-09 10:01:15 -07:00
of iommu/of: Ignore all errors except EPROBE_DEFER 2017-05-30 11:31:32 +02:00
oprofile
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parisc
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parport Annotate hardware config module parameters in drivers/parport/ 2017-04-20 12:02:32 +01:00
pci PCI: endpoint: Select CRC32 to fix test build error 2017-06-12 15:46:13 -05:00
pcmcia Annotation of module parameters that specify device settings 2017-05-10 19:13:03 -07:00
perf drivers/perf: arm_pmu_acpi: avoid perf IRQ init when guest PMU is off 2017-05-30 12:40:03 +01:00
phy phy: qualcomm: phy-qcom-qmp: fix application of sizeof to pointer 2017-06-01 15:03:41 +05:30
pinctrl Revert "pinctrl: rockchip: avoid hardirq-unsafe functions in irq_chip" 2017-06-29 15:03:24 +02:00
platform platform-drivers-x86 for v4.12-2 2017-06-16 17:30:44 +09:00
pnp
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power power supply and reset changes for the v4.12 series (part 2) 2017-05-12 12:02:21 -07:00
powercap PowerCap: Fix an error code in powercap_register_zone() 2017-05-14 13:30:05 +02:00
pps
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ps3
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ptp Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-01 16:15:18 -07:00
pwm Merge branch 'for-4.12/drivers' into for-next 2017-04-13 17:41:50 +02:00
rapidio char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
ras
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regulator Merge remote-tracking branch 'regulator/topic/vctrl' into regulator-next 2017-04-30 22:17:44 +09:00
remoteproc virtio: fixes, cleanups, performance 2017-05-10 11:33:08 -07:00
reset reset: hi6220: Set module license so that it can be loaded 2017-05-24 10:53:41 +02:00
rpmsg virtio: fixes, cleanups, performance 2017-05-10 11:33:08 -07:00
rtc Merge branches 'pm-sleep' and 'powercap' 2017-05-22 20:32:05 +02:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-06-15 18:09:47 +09:00
sbus
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scsi SCSI fixes on 20170622 2017-06-23 12:25:37 -07:00
sfi
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sh
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sn
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soc ARM: SoC fixes (and a cross-arch dt-include fix) 2017-05-19 13:36:56 -07:00
spi Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into spi-next 2017-04-26 15:58:22 +01:00
spmi
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ssb
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staging Staging/IIO fixes for 4.12-rc6 2017-06-18 08:36:30 +09:00
target iscsi-target: Reject immediate data underflow larger than SCSI transfer length 2017-06-08 22:25:29 -07:00
tc
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tee Linux 4.12-rc1 2017-05-18 23:54:47 -07:00
thermal thermal: broadcom: ns-thermal: default on iProc SoCs 2017-05-23 20:09:34 -07:00
thunderbolt
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tty Revert "tty: fix port buffer locking" 2017-06-04 10:23:25 +02:00
uio uio: fix incorrect memory leak cleanup 2017-05-16 23:06:41 +02:00
usb USB fixes for 4.12-rc6 2017-06-18 08:39:54 +09:00
uwb uwb: fix device quirk on big-endian hosts 2017-05-17 11:27:41 +02:00
vfio powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
vhost mm: support __GFP_REPEAT in kvmalloc_node for >32kB 2017-05-08 17:15:12 -07:00
video video: fbdev: udlfb: drop log level for blanking 2017-06-14 12:40:36 +02:00
virt drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked() 2017-05-08 17:15:10 -07:00
virtio virtio_balloon: disable VIOMMU support 2017-06-18 23:13:35 +03:00
vlynq
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vme
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w1
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watchdog watchdog: bcm281xx: Fix use of uninitialized spinlock. 2017-05-19 10:42:25 +02:00
xen xen: fix for 4.12 rc5 2017-06-09 09:59:51 -07:00
zorro
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Kconfig
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Makefile Merge branch 'tee/initial-merge' into fixes 2017-05-10 21:03:31 +02:00