diff options
| author | Bruno Prémont <bonbons@linux-vserver.org> | 2012-07-30 23:38:57 +0400 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-08-15 12:13:26 +0400 |
| commit | a93ab8494873a88622bf74be861a93f875643524 (patch) | |
| tree | 19f76ccf334ffb78b387b10c047df61f44d8fa07 /drivers/hid/hid-picolcd_lcd.c | |
| parent | baacf9c5d2e631e7c940527ad670c8d4b019da81 (diff) | |
| download | linux-a93ab8494873a88622bf74be861a93f875643524.tar.xz | |
HID: picoLCD: Improve unplug handling
Stop earlier attempting to submit new reports/URBs (though locking and
usbhid still prevents to bail out early enough to not produce multiple
hid-picolcd 0003:04D8:C002.0003: usb_submit_urb(out) failed: -19
messages in kernel log.
Strengthen framebuffer removal to be less racy.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-picolcd_lcd.c')
| -rw-r--r-- | drivers/hid/hid-picolcd_lcd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/hid/hid-picolcd_lcd.c b/drivers/hid/hid-picolcd_lcd.c index 64a067fc837c..2d0ddc5ac65f 100644 --- a/drivers/hid/hid-picolcd_lcd.c +++ b/drivers/hid/hid-picolcd_lcd.c @@ -47,7 +47,8 @@ static int picolcd_set_contrast(struct lcd_device *ldev, int contrast) data->lcd_contrast = contrast & 0x0ff; spin_lock_irqsave(&data->lock, flags); hid_set_field(report->field[0], 0, data->lcd_contrast); - usbhid_submit_report(data->hdev, report, USB_DIR_OUT); + if (!(data->status & PICOLCD_FAILED)) + usbhid_submit_report(data->hdev, report, USB_DIR_OUT); spin_unlock_irqrestore(&data->lock, flags); return 0; } |