diff options
| -rw-r--r-- | drivers/staging/dwc2/hcd_queue.c | 90 |
1 files changed, 30 insertions, 60 deletions
diff --git a/drivers/staging/dwc2/hcd_queue.c b/drivers/staging/dwc2/hcd_queue.c index f200f1f..2f68fbc 100644 --- a/drivers/staging/dwc2/hcd_queue.c +++ b/drivers/staging/dwc2/hcd_queue.c @@ -344,25 +344,17 @@ void dwc2_hcd_init_usecs(struct dwc2_hsotg *hsotg) static int dwc2_find_single_uframe(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) { unsigned short utime = qh->usecs; - int done = 0; - int i = 0; - int ret = -1; + int i; - while (!done) { + for (i = 0; i < 8; i++) { /* At the start hsotg->frame_usecs[i] = max_uframe_usecs[i] */ if (utime <= hsotg->frame_usecs[i]) { hsotg->frame_usecs[i] -= utime; qh->frame_usecs[i] += utime; - ret = i; - done = 1; - } else { - i++; - if (i == 8) - done = 1; + return i; } } - - return ret; + return -1; } /* @@ -372,21 +364,14 @@ static int dwc2_find_multi_uframe(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) { unsigned short utime = qh->usecs; unsigned short xtime; - int t_left = utime; - int done = 0; - int i = 0; + int t_left; + int i; int j; - int ret = -1; - - while (!done) { - if (hsotg->frame_usecs[i] <= 0) { - i++; - if (i == 8) { - ret = -1; - done = 1; - } + int k; + + for (i = 0; i < 8; i++) { + if (hsotg->frame_usecs[i] <= 0) continue; - } /* * we need n consecutive slots so use j as a start slot @@ -400,50 +385,35 @@ static int dwc2_find_multi_uframe(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) */ if (xtime + hsotg->frame_usecs[j] < utime) { if (hsotg->frame_usecs[j] < - max_uframe_usecs[j]) { - ret = -1; - break; - } + max_uframe_usecs[j]) + continue; } if (xtime >= utime) { - ret = i; - break; + t_left = utime; + for (k = i; k < 8; k++) { + t_left -= hsotg->frame_usecs[k]; + if (t_left <= 0) { + qh->frame_usecs[k] += + hsotg->frame_usecs[k] + + t_left; + hsotg->frame_usecs[k] = -t_left; + return i; + } else { + qh->frame_usecs[k] += + hsotg->frame_usecs[k]; + hsotg->frame_usecs[k] = 0; + } + } } /* add the frame time to x time */ xtime += hsotg->frame_usecs[j]; /* we must have a fully available next frame or break */ if (xtime < utime && - hsotg->frame_usecs[j] == max_uframe_usecs[j]) { - ret = -1; - break; - } - } - if (ret >= 0) { - t_left = utime; - for (j = i; t_left > 0 && j < 8; j++) { - t_left -= hsotg->frame_usecs[j]; - if (t_left <= 0) { - qh->frame_usecs[j] += - hsotg->frame_usecs[j] + t_left; - hsotg->frame_usecs[j] = -t_left; - ret = i; - done = 1; - } else { - qh->frame_usecs[j] += - hsotg->frame_usecs[j]; - hsotg->frame_usecs[j] = 0; - } - } - } else { - i++; - if (i == 8) { - ret = -1; - done = 1; - } + hsotg->frame_usecs[j] == max_uframe_usecs[j]) + continue; } } - - return ret; + return -1; } static int dwc2_find_uframe(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) |