Messages in this thread Patch in this message | | | Date | Wed, 14 May 2008 12:29:41 +0200 | From | Roel Kluin <> | Subject | [PATCH ?] usb/gadget/pxa27x_udc: test ep0state == IN_DATA_STAGE rather than non-bool USB_DIR_IN |
| |
The patch below was not tested! #------------------------------------------------------------------------------# drivers/usb/gadget/pxa27x_udc.c uses USB_DIR_IN as if boolean in functions inc_ep_stats_{reqs,bytes}, lines 763, 795, 933, 985, 1037 and 1074, but USB_DIR_IN is defined 0x80.
handle_ep0_ctrl_req() tests USB_DIR_IN bitwise and pxa_udc's ep0_state is set IN_DATA_STAGE or OUT_DATA_STAGE. so ep->dev->ep0state == IN_DATA_STAGE should be tested rather than USB_DIR_IN
I am uncertain whether this fix is correct and sufficient, feedback appreciated. - Maybe more tests are required: is ep->dev == NULL or similar - Maybe I should test ep->dev->ep0state == OUT_DATA_STAGE rather than ep->dev->ep0state != IN_DATA_STAGE (instead of !USB_DIR_IN)
--- USB_DIR_IN is not boolean, test ep0state == IN_DATA_STAGE instead.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> --- diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 75eba20..ea18995 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -760,7 +760,7 @@ static void req_done(struct pxa_ep *ep, struct pxa27x_request *req, int status) */ static void ep_end_out_req(struct pxa_ep *ep, struct pxa27x_request *req) { - inc_ep_stats_reqs(ep, !USB_DIR_IN); + inc_ep_stats_reqs(ep, ep->dev->ep0state != IN_DATA_STAGE); req_done(ep, req, 0); } @@ -792,7 +792,7 @@ static void ep0_end_out_req(struct pxa_ep *ep, struct pxa27x_request *req) */ static void ep_end_in_req(struct pxa_ep *ep, struct pxa27x_request *req) { - inc_ep_stats_reqs(ep, USB_DIR_IN); + inc_ep_stats_reqs(ep, ep->dev->ep0state == IN_DATA_STAGE); req_done(ep, req, 0); } @@ -930,7 +930,8 @@ static int read_fifo(struct pxa_ep *ep, struct pxa27x_request *req) while (epout_has_pkt(ep)) { count = read_packet(ep, req); - inc_ep_stats_bytes(ep, count, !USB_DIR_IN); + inc_ep_stats_bytes(ep, count, + ep->dev->ep0state != IN_DATA_STAGE); is_short = (count < ep->fifo_size); ep_dbg(ep, "read udccsr:%03x, count:%d bytes%s req %p %d/%d\n", @@ -982,7 +983,8 @@ static int write_fifo(struct pxa_ep *ep, struct pxa27x_request *req) } count = write_packet(ep, req, max); - inc_ep_stats_bytes(ep, count, USB_DIR_IN); + inc_ep_stats_bytes(ep, count, + ep->dev->ep0state == IN_DATA_STAGE); totcount += count; /* last packet is usually short (or a zlp) */ @@ -1034,7 +1036,8 @@ static int read_ep0_fifo(struct pxa_ep *ep, struct pxa27x_request *req) while (epout_has_pkt(ep)) { count = read_packet(ep, req); udc_ep_writel(ep, UDCCSR, UDCCSR0_OPC); - inc_ep_stats_bytes(ep, count, !USB_DIR_IN); + inc_ep_stats_bytes(ep, count, + ep->dev->ep0state != IN_DATA_STAGE); is_short = (count < ep->fifo_size); ep_dbg(ep, "read udccsr:%03x, count:%d bytes%s req %p %d/%d\n",
| |