diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2013-10-11 19:28:12 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-12 03:37:46 +0400 |
| commit | e24371a6be9c5c00b56607bd425cc409cba75d88 (patch) | |
| tree | 1983383adb655434cb7014d9bdc8d4b487590e73 | |
| parent | 63fb3a280061c5a1d9190015e5a074213f9d23c0 (diff) | |
| download | linux-e24371a6be9c5c00b56607bd425cc409cba75d88.tar.xz | |
USB: EHCI: check the right uframes for CSPLIT
The check_intr_schedule() routine in ehci-hcd looks at the wrong
microframes when checking to see if a full-speed or low-speed
interrupt endpoint will fit in the periodic schedule. If the
Start-Split transaction is scheduled for microframe N then the
Complete-Split transactions get scheduled for microframes N+2, N+3, and
N+4. However the code considers N+1, N+2, and N+3 instead.
This patch fixes the limits on the "for" loop and also improves the
use of whitespace.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/ehci-sched.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index dcbaad94d607..34b5945fafa5 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -761,7 +761,7 @@ static int check_intr_schedule ( unsigned i; /* TODO : this may need FSTN for SSPLIT in uframe 5. */ - for (i=uframe+1; i<8 && i<uframe+4; i++) + for (i = uframe+2; i < 8 && i <= uframe+4; i++) if (!check_period (ehci, frame, i, qh->period, qh->c_usecs)) goto done; |