diff options
Diffstat (limited to 'drivers/media/usb/siano/smsusb.c')
| -rw-r--r-- | drivers/media/usb/siano/smsusb.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/media/usb/siano/smsusb.c b/drivers/media/usb/siano/smsusb.c index 8abbd3cc8eba..c2e25876e93b 100644 --- a/drivers/media/usb/siano/smsusb.c +++ b/drivers/media/usb/siano/smsusb.c @@ -27,6 +27,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #include <linux/firmware.h> #include <linux/slab.h> #include <linux/module.h> +#include <media/media-device.h> #include "sms-cards.h" #include "smsendian.h" @@ -51,6 +52,9 @@ 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 +75,18 @@ 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 +154,15 @@ 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"); @@ -353,15 +371,7 @@ static void *siano_media_device_register(struct smsusb_device_t *dev, if (!mdev) return NULL; - mdev->dev = &udev->dev; - strlcpy(mdev->model, board->name, sizeof(mdev->model)); - if (udev->serial) - strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial)); - strcpy(mdev->bus_info, udev->devpath); - mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); - mdev->driver_version = LINUX_VERSION_CODE; - - media_device_init(mdev); + media_device_usb_init(mdev, udev, board->name); ret = media_device_register(mdev); if (ret) { |