diff options
| -rw-r--r-- | drivers/usb/host/r8a66597-hcd.c | 40 |
1 files changed, 19 insertions, 21 deletions
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index 94bb229df3b..49cf998c172 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -1109,8 +1109,9 @@ static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) } /* this function must be called with interrupt disabled */ -static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td, - u16 pipenum, struct urb *urb) +static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, + u16 pipenum, struct urb *urb) +__releases(r8a66597->lock) __acquires(r8a66597->lock) { int restart = 0; struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); @@ -1151,14 +1152,6 @@ static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td, } } -/* this function must be called with interrupt disabled */ -static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, - u16 pipenum, struct urb *urb) -__releases(r8a66597->lock) __acquires(r8a66597->lock) -{ - done(r8a66597, td, pipenum, urb); -} - static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) { u16 tmp; @@ -1167,6 +1160,7 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); struct urb *urb; int finish = 0; + int status = 0; if (unlikely(!td)) return; @@ -1185,7 +1179,6 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) /* prepare parameters */ rcv_len = tmp & DTLN; - bufsize = td->maxpacket; if (usb_pipeisoc(urb->pipe)) { buf = (u16 *)(urb->transfer_buffer + urb->iso_frame_desc[td->iso_cnt].offset); @@ -1194,25 +1187,30 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) buf = (void *)urb->transfer_buffer + urb->actual_length; urb_len = urb->transfer_buffer_length - urb->actual_length; } - if (rcv_len < bufsize) - size = min(rcv_len, urb_len); - else - size = min(bufsize, urb_len); + bufsize = min(urb_len, (int) td->maxpacket); + if (rcv_len <= bufsize) { + size = rcv_len; + } else { + size = bufsize; + status = -EOVERFLOW; + finish = 1; + } /* update parameters */ urb->actual_length += size; if (rcv_len == 0) td->zero_packet = 1; - if ((size % td->maxpacket) > 0) { + if (rcv_len < bufsize) { td->short_packet = 1; if (urb->transfer_buffer_length != urb->actual_length && urb->transfer_flags & URB_SHORT_NOT_OK) - td->urb->status = -EREMOTEIO; + status = -EREMOTEIO; } if (usb_pipeisoc(urb->pipe)) { urb->iso_frame_desc[td->iso_cnt].actual_length = size; - urb->iso_frame_desc[td->iso_cnt].status = 0; + urb->iso_frame_desc[td->iso_cnt].status = status; td->iso_cnt++; + finish = 0; } /* check transfer finish */ @@ -1233,7 +1231,7 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) if (finish && pipenum != 0) { if (td->urb->status == -EINPROGRESS) - td->urb->status = 0; + td->urb->status = status; finish_request(r8a66597, td, pipenum, urb); } } @@ -1807,7 +1805,7 @@ static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, pipe_stop(r8a66597, td->pipe); pipe_irq_disable(r8a66597, td->pipenum); disable_irq_empty(r8a66597, td->pipenum); - done(r8a66597, td, td->pipenum, urb); + finish_request(r8a66597, td, td->pipenum, urb); } done: spin_unlock_irqrestore(&r8a66597->lock, flags); @@ -1841,7 +1839,7 @@ static void r8a66597_endpoint_disable(struct usb_hcd *hcd, td = r8a66597_get_td(r8a66597, pipenum); if (td) urb = td->urb; - done(r8a66597, td, pipenum, urb); + finish_request(r8a66597, td, pipenum, urb); kfree(hep->hcpriv); hep->hcpriv = NULL; spin_unlock_irqrestore(&r8a66597->lock, flags); |