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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2016-02-12 17:10:37 +0100
committerJiri Kosina <jkosina@suse.cz>2016-02-16 11:03:50 +0100
commit4392bf333388cabdad5afe5b1500002d7b9c318e (patch)
tree1a377fe5b8b970ec4bf5557052f4c2a8683899a4 /drivers/hid
parent5d74325a2201376a95520a4a38a1ce2c65761c49 (diff)
downloadblackbird-op-linux-4392bf333388cabdad5afe5b1500002d7b9c318e.tar.gz
blackbird-op-linux-4392bf333388cabdad5afe5b1500002d7b9c318e.zip
HID: fix hid_ignore_special_drivers module parameter
hid_ignore_special_drivers works fine until hid_scan_report autodetects and reassign devices (for hid-multitouch, hid-microsoft and hid-rmi). Simplify the handling of the parameter: if it is there, use hid-generic, no matter what, and if not, scan the device or rely on the hid_have_special_driver table. This was detected while trying to disable hid-multitouch on a Surface Pro cover which prevented to use the keyboard. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> CC: stable@vger.kernel.org Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-core.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index bf63ff89e2e6..729cc4903ec6 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2661,9 +2661,10 @@ int hid_add_device(struct hid_device *hdev)
/*
* Scan generic devices for group information
*/
- if (hid_ignore_special_drivers ||
- (!hdev->group &&
- !hid_match_id(hdev, hid_have_special_driver))) {
+ if (hid_ignore_special_drivers) {
+ hdev->group = HID_GROUP_GENERIC;
+ } else if (!hdev->group &&
+ !hid_match_id(hdev, hid_have_special_driver)) {
ret = hid_scan_report(hdev);
if (ret)
hid_warn(hdev, "bad device descriptor (%d)\n", ret);
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