diff options
| author | Patrice Chotard <[email protected]> | 2011-03-21 16:58:56 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <[email protected]> | 2011-03-22 16:38:26 -0300 |
| commit | 7106225a9e7d123ff87a6848972b6d28c8903940 (patch) | |
| tree | 5372803a5702a4f92bd5f2774ffccc9fff2d4326 | |
| parent | 8e3c08bb41145bd8507397f63937759500c12a04 (diff) | |
[media] gspca - main: Add endpoint direction test in alt_xfer
This patch fixes a bug in gspca, more precisely in alt_xfer().
This function looks for an input transfer endpoint in an alternate setting.
By default it returns the first endpoint corresponding to the transfer type
indicated in parameter.
But with some USB devices, the first endpoint corresponding to the transfer
type is not always an INPUT endpoint but an OUTPUT one.
This patch adds the endpoint direction test to be sure to return an INPUT endpoint
Signed-off-by: Patrice CHOTARD <[email protected]>
Signed-off-by: Jean-François Moine <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index 62881740a0bd..9c6a643caf01 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -630,7 +630,8 @@ static struct usb_host_endpoint *alt_xfer(struct usb_host_interface *alt, ep = &alt->endpoint[i]; attr = ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; if (attr == xfer - && ep->desc.wMaxPacketSize != 0) + && ep->desc.wMaxPacketSize != 0 + && usb_endpoint_dir_in(&ep->desc)) return ep; } return NULL; |