diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2007-07-30 17:06:16 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 14:55:00 -0700 |
| commit | fea3409112a93581db18da4c4332c8bf8d68af6b (patch) | |
| tree | c89b9fd9f8a64d2419d7888a6ab135851f4fee38 /drivers/usb/core/hcd.c | |
| parent | bdd016ba64d909329cb4bacacc8443901c00e112 (diff) | |
USB: add direction bit to urb->transfer_flags
This patch (as945) adds a bit to urb->transfer_flags for recording the
direction of the URB. The bit is set/cleared automatically in
usb_submit_urb() so drivers don't have to worry about it (although as
a result, it isn't valid until the URB has been submitted). Inline
routines are added for easily checking an URB's direction. They
replace calls to usb_pipein in the DMA-mapping parts of hcd.c.
For non-control endpoints, the direction is determined directly from
the endpoint descriptor. However control endpoints are
bi-directional; for them the direction is determined from the
bRequestType byte and the wLength value in the setup packet.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index cc5b1d3c368..bcbaedc897d 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -928,7 +928,7 @@ static void urb_unlink(struct usb_hcd *hcd, struct urb *urb) dma_unmap_single (hcd->self.controller, urb->transfer_dma, urb->transfer_buffer_length, - usb_pipein (urb->pipe) + usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } @@ -1014,7 +1014,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags) hcd->self.controller, urb->transfer_buffer, urb->transfer_buffer_length, - usb_pipein (urb->pipe) + usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } |