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HID: core: do not scan reports if the group is already set

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This allows the transport layer (I have in mind hid-logitech-dj and uhid)
to set the group before it is added to the hid bus. This way, it can
bypass the hid_scan_report() call, and choose in advance which driver
will handle the newly created hid device.

Signed-off-by: Benjamin Tisssoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2014-09-30 13:18:24 -04:00 • committed by Jiri Kosina
parent c241c5eea8
commit 9578f41aea
1 changed files with 2 additions and 1 deletions
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3
drivers/hid/hid-core.c
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@ -2535,7 +2535,8 @@ int hid_add_device(struct hid_device *hdev)
* Scan generic devices for group information
*/
if (hid_ignore_special_drivers ||
!hid_match_id(hdev, hid_have_special_driver)) {
(!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);