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authorKai-Heng Feng <kai.heng.feng@canonical.com>2018-11-14 08:24:57 +0100
committerJiri Kosina <jkosina@suse.cz>2018-11-19 16:27:00 +0100
commit86c31524b27c7e686841dd4a79eda95cfd989f16 (patch)
treea4fcc4d71e30124ae397bf0cfe6a9f379a6f4577 /drivers/hid/hid-ids.h
parentHID: multitouch: Add pointstick support for Cirque Touchpad (diff)
downloadlinux-86c31524b27c7e686841dd4a79eda95cfd989f16.tar.xz
linux-86c31524b27c7e686841dd4a79eda95cfd989f16.zip
HID: i2c-hid: Disable runtime PM for LG touchscreen
LG touchscreen (1fd2:8001) stops working after reboot: [ 4.859153] i2c_hid i2c-SAPS2101:00: i2c_hid_get_input: incomplete report (64/66) [ 4.936070] i2c_hid i2c-SAPS2101:00: i2c_hid_get_input: incomplete report (64/66) [ 9.948224] i2c_hid i2c-SAPS2101:00: failed to reset device. The device in question stops working after receives SLEEP, ON, SLEEP commands in a short period. The scenario is like this: - Once the desktop session closes, it also closed the hid device, so the device gets runtime suspended and receives a SLEEP command. - Before calling shutdown callback, it gets runtime resumed and received an ON command. - In the shutdown callback, it receives another SLEEP command. I failed to find a reliable interval between ON/SLEEP commands that can make it work, so let's simply disable runtime PM for the device. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-ids.h')
-rw-r--r--drivers/hid/hid-ids.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 3917fc4cf96a..2114ac647bef 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -710,6 +710,7 @@
#define USB_VENDOR_ID_LG 0x1fd2
#define USB_DEVICE_ID_LG_MULTITOUCH 0x0064
#define USB_DEVICE_ID_LG_MELFAS_MT 0x6007
+#define I2C_DEVICE_ID_LG_8001 0x8001
#define USB_VENDOR_ID_LOGITECH 0x046d
#define USB_DEVICE_ID_LOGITECH_AUDIOHUB 0x0a0e