[media] gspca: Update / fix various comments wrt workqueue usb_lock usage

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/usb/gspca/sonixj.c b/drivers/media/usb/gspca/sonixj.c
index 150b2df40f7f..5a86047b846f 100644
--- a/drivers/media/usb/gspca/sonixj.c
+++ b/drivers/media/usb/gspca/sonixj.c
@@ -2380,8 +2380,10 @@ static void qual_upd(struct work_struct *work)
         struct sd *sd = container_of(work, struct sd, work);
         struct gspca_dev *gspca_dev = &sd->gspca_dev;
 
+        /* To protect gspca_dev->usb_buf and gspca_dev->usb_err */
         mutex_lock(&gspca_dev->usb_lock);
         PDEBUG(D_STREAM, "qual_upd %d%%", sd->quality);
+        gspca_dev->usb_err = 0;
         setjpegqual(gspca_dev);
         mutex_unlock(&gspca_dev->usb_lock);
 }