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| author | Ping Cheng <pingc@wacom.com> | 2010-04-13 23:07:52 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-04-15 11:16:10 -0700 |
| commit | 014f61504af276ba9d9544d8a7401d8f8526eb73 (patch) | |
| tree | a3d386045a91d9cd1f446637c2901bd2a16634c4 | |
| parent | afb567e3fdd2ee43b243cb4f6fe772ab921b2ada (diff) | |
| download | lwn-014f61504af276ba9d9544d8a7401d8f8526eb73.tar.gz lwn-014f61504af276ba9d9544d8a7401d8f8526eb73.zip | |
Input: wacom - switch mode upon system resume
When Wacom devices wake up from a sleep, the switch mode command
(wacom_query_tablet_data) is needed before wacom_open is called.
wacom_query_tablet_data should not be executed inside wacom_open
since wacom_open is called more than once during probe.
wacom_retrieve_hid_descriptor is removed from wacom_resume due
to the fact that the required descriptors are stored properly
upon system resume.
Reported-and-tested-by: Anton Anikin <Anton@Anikin.name>
Signed-off-by: Ping Cheng <pingc@wacom.com>
Cc: stable@kernel.org
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| -rw-r--r-- | drivers/input/tablet/wacom_sys.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 8b5d2873f0c4..f46502589e4e 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -673,13 +673,15 @@ static int wacom_resume(struct usb_interface *intf) int rv; mutex_lock(&wacom->lock); - if (wacom->open) { + + /* switch to wacom mode first */ + wacom_query_tablet_data(intf, features); + + if (wacom->open) rv = usb_submit_urb(wacom->irq, GFP_NOIO); - /* switch to wacom mode if needed */ - if (!wacom_retrieve_hid_descriptor(intf, features)) - wacom_query_tablet_data(intf, features); - } else + else rv = 0; + mutex_unlock(&wacom->lock); return rv; |