V4L/DVB (12358): gspca - main: Memorize the current alt before setting it

This prevents a loop if a permanent error occurs in usb_set_interface().

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

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 6ec7506..016599d 100644 (file)
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -486,6 +486,7 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
        }
        PDEBUG(D_STREAM, "use alt %d ep 0x%02x",
                        i, ep->desc.bEndpointAddress);
+       gspca_dev->alt = i;             /* memorize the current alt setting */
        if (gspca_dev->nbalt > 1) {
                ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i);
                if (ret < 0) {
@@ -493,7 +494,6 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
                        return NULL;
                }
        }
-       gspca_dev->alt = i;             /* memorize the current alt setting */
        return ep;
 }