From 04fd4cb0b098789725d04e9d4a7e7dda373b1121 Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Mon, 19 Sep 2016 15:41:39 +0800 Subject: [PATCH] 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 Signed-off-by: Jiri Kosina --- drivers/hid/hid-alps.c | 4 ++-- 1 file 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 */