diff options
author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2018-11-14 07:24:57 +0000 |
---|---|---|
committer | Jiri Kosina <jkosina@suse.cz> | 2018-11-19 16:27:00 +0100 |
commit | 86c31524b27c7e686841dd4a79eda95cfd989f16 (patch) | |
tree | a4fcc4d71e30124ae397bf0cfe6a9f379a6f4577 /drivers/hid/hid-ids.h | |
parent | 12d43aacf9a74d0eb66fd0ea54ebeb79ca28940f (diff) | |
download | linux-stable-86c31524b27c7e686841dd4a79eda95cfd989f16.tar.gz linux-stable-86c31524b27c7e686841dd4a79eda95cfd989f16.tar.bz2 linux-stable-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.h | 1 |
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 |