V4L/DVB (9689): gspca: Memory leak when disconnect while streaming.

As a side effect, the sd routine stop0 is called on disconnect.
This permits the subdriver to free its resources.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/finepix.c b/drivers/media/video/gspca/finepix.c
index 65d3cbfe6b27..607942fd7970 100644
--- a/drivers/media/video/gspca/finepix.c
+++ b/drivers/media/video/gspca/finepix.c
@@ -276,6 +276,12 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
         /* Stop the state machine */
         if (dev->state != FPIX_NOP)
                 wait_for_completion(&dev->can_close);
+}
+
+/* called on streamoff with alt 0 and disconnect */
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+        struct usb_fpix *dev = (struct usb_fpix *) gspca_dev;
 
         usb_free_urb(dev->control_urb);
         dev->control_urb = NULL;
@@ -385,6 +391,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
 error:
         /* Free the ressources */
         sd_stopN(gspca_dev);
+        sd_stop0(gspca_dev);
         return ret;
 }
 
@@ -425,6 +432,7 @@ static const struct sd_desc sd_desc = {
         .init = sd_init,
         .start = sd_start,
         .stopN = sd_stopN,
+        .stop0 = sd_stop0,
 };
 
 /* -- device connect -- */