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| author | Nestor Lopez Casado <nlopezcasad@logitech.com> | 2012-09-21 12:21:34 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-09-22 10:58:48 +0200 |
| commit | 596264082f10dd4a567c43d4526b2f54ac5520bc (patch) | |
| tree | c579bba38c8a9d6f38b3b68661c4268396e477e5 /drivers/hid/hid-logitech-dj.h | |
| parent | 391499801b1b31f39c8e8ac382ac97f5e3742934 (diff) | |
| download | linux-3.10-596264082f10dd4a567c43d4526b2f54ac5520bc.tar.gz linux-3.10-596264082f10dd4a567c43d4526b2f54ac5520bc.tar.bz2 linux-3.10-596264082f10dd4a567c43d4526b2f54ac5520bc.zip | |
HID: Fix logitech-dj: missing Unifying device issue
This patch fixes an issue introduced after commit 4ea5454203d991ec
("HID: Fix race condition between driver core and ll-driver").
After that commit, hid-core discards any incoming packet that arrives while
hid driver's probe function is being executed.
This broke the enumeration process of hid-logitech-dj, that must receive
control packets in-band with the mouse and keyboard packets. Discarding mouse
or keyboard data at the very begining is usually fine, but it is not the case
for control packets.
This patch forces a re-enumeration of the paired devices when a packet arrives
that comes from an unknown device.
Based on a patch originally written by Benjamin Tissoires.
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Nestor Lopez Casado <nlopezcasad@logitech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-logitech-dj.h')
| -rw-r--r-- | drivers/hid/hid-logitech-dj.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hid/hid-logitech-dj.h b/drivers/hid/hid-logitech-dj.h index fd28a5e0ca3..4a4000340ce 100644 --- a/drivers/hid/hid-logitech-dj.h +++ b/drivers/hid/hid-logitech-dj.h @@ -101,6 +101,7 @@ struct dj_receiver_dev { struct work_struct work; struct kfifo notif_fifo; spinlock_t lock; + bool querying_devices; }; struct dj_device { |