diff options
| -rw-r--r-- | drivers/media/usb/siano/smsusb.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/media/usb/siano/smsusb.c b/drivers/media/usb/siano/smsusb.c index 8abbd3cc8eba..9fac9779f616 100644 --- a/drivers/media/usb/siano/smsusb.c +++ b/drivers/media/usb/siano/smsusb.c @@ -51,6 +51,9 @@ struct smsusb_urb_t { struct smsusb_device_t *dev; struct urb urb; + + /* For the bottom half */ + struct work_struct wq; }; struct smsusb_device_t { @@ -71,6 +74,18 @@ static int smsusb_submit_urb(struct smsusb_device_t *dev, struct smsusb_urb_t *surb); /** + * Completing URB's callback handler - bottom half (proccess context) + * submits the URB prepared on smsusb_onresponse() + */ +static void do_submit_urb(struct work_struct *work) +{ + struct smsusb_urb_t *surb = container_of(work, struct smsusb_urb_t, wq); + struct smsusb_device_t *dev = surb->dev; + + smsusb_submit_urb(dev, surb); +} + +/** * Completing URB's callback handler - top half (interrupt context) * adds completing sms urb to the global surbs list and activtes the worker * thread the surb @@ -138,13 +153,15 @@ static void smsusb_onresponse(struct urb *urb) exit_and_resubmit: - smsusb_submit_urb(dev, surb); + INIT_WORK(&surb->wq, do_submit_urb); + schedule_work(&surb->wq); } static int smsusb_submit_urb(struct smsusb_device_t *dev, struct smsusb_urb_t *surb) { if (!surb->cb) { + /* This function can sleep */ surb->cb = smscore_getbuffer(dev->coredev); if (!surb->cb) { pr_err("smscore_getbuffer(...) returned NULL\n"); |