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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2016-09-19 15:41:39 +0800 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2016-09-22 11:07:16 +0200 |
| commit | 04fd4cb0b098789725d04e9d4a7e7dda373b1121 (patch) | |
| tree | f6c1cfb41e85db962abd6bd55fa59e10aedd2a46 /drivers/hid/hid-alps.c | |
| parent | 7ee2eaa3641827a9ecdffa190cde31846024d2e3 (diff) | |
| download | linux-04fd4cb0b098789725d04e9d4a7e7dda373b1121.tar.gz linux-04fd4cb0b098789725d04e9d4a7e7dda373b1121.tar.xz | |
HID: alps: fix stick device not working after resume
The stick device does not work after resume, add U1_SP_ABS_MODE flag can
make the device work after resume.
This has been discovered by pure guesswork, based on how the existing code uses
U1_TP_ABS_MODE flag on both initialization and resume.
I also tested the the patch on an ALPS touchpad without stick device, did not
notice any side effect on suspend/resume, so I made the U1_SP_ABS_MODE flag
mandatory.
[jkosina@suse.cz: made changelog more verbose]
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-alps.c')
| -rw-r--r-- | drivers/hid/hid-alps.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hid/hid-alps.c b/drivers/hid/hid-alps.c index 2808da9ed9c8..afc847fb2b06 100644 --- a/drivers/hid/hid-alps.c +++ b/drivers/hid/hid-alps.c @@ -245,13 +245,13 @@ static int alps_raw_event(struct hid_device *hdev, static int alps_post_reset(struct hid_device *hdev) { return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, - NULL, U1_TP_ABS_MODE, false); + NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false); } static int alps_post_resume(struct hid_device *hdev) { return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, - NULL, U1_TP_ABS_MODE, false); + NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false); } #endif /* CONFIG_PM */ |