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-rw-r--r--drivers/usb/host/ohci-hcd.c32
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index df1af0bcfe99..fc627fd54116 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -240,7 +240,7 @@ static int ohci_urb_enqueue (
240 if (unlikely(tick_before(frame, next))) { 240 if (unlikely(tick_before(frame, next))) {
241 241
242 /* USB_ISO_ASAP: Round up to the first available slot */ 242 /* USB_ISO_ASAP: Round up to the first available slot */
243 if (urb->transfer_flags & URB_ISO_ASAP) 243 if (urb->transfer_flags & URB_ISO_ASAP) {
244 frame += (next - frame + ed->interval - 1) & 244 frame += (next - frame + ed->interval - 1) &
245 -ed->interval; 245 -ed->interval;
246 246
@@ -248,21 +248,25 @@ static int ohci_urb_enqueue (
248 * Not ASAP: Use the next slot in the stream. If 248 * Not ASAP: Use the next slot in the stream. If
249 * the entire URB falls before the threshold, fail. 249 * the entire URB falls before the threshold, fail.
250 */ 250 */
251 else if (tick_before(frame + ed->interval * 251 } else {
252 if (tick_before(frame + ed->interval *
252 (urb->number_of_packets - 1), next)) { 253 (urb->number_of_packets - 1), next)) {
253 retval = -EXDEV; 254 retval = -EXDEV;
254 usb_hcd_unlink_urb_from_ep(hcd, urb); 255 usb_hcd_unlink_urb_from_ep(hcd, urb);
255 goto fail; 256 goto fail;
256 } 257 }
257 258
258 /* 259 /*
259 * Some OHCI hardware doesn't handle late TDs 260 * Some OHCI hardware doesn't handle late TDs
260 * correctly. After retiring them it proceeds to 261 * correctly. After retiring them it proceeds
261 * the next ED instead of the next TD. Therefore 262 * to the next ED instead of the next TD.
262 * we have to omit the late TDs entirely. 263 * Therefore we have to omit the late TDs
263 */ 264 * entirely.
264 urb_priv->td_cnt = DIV_ROUND_UP(next - frame, 265 */
265 ed->interval); 266 urb_priv->td_cnt = DIV_ROUND_UP(
267 (u16) (next - frame),
268 ed->interval);
269 }
266 } 270 }
267 urb->start_frame = frame; 271 urb->start_frame = frame;
268 } 272 }