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| author | Alan Stern <stern@rowland.harvard.edu> | 2013-10-11 15:28:21 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-11 23:37:46 (GMT) |
| commit | 2b90f01b219e390e1f1bf68dd7a2333efb3e3eff (patch) | |
| tree | 77d664254c0376ea68850e86ba6c2df5aa1dabfd | |
| parent | e24371a6be9c5c00b56607bd425cc409cba75d88 (diff) | |
| download | linux-fsl-qoriq-2b90f01b219e390e1f1bf68dd7a2333efb3e3eff.tar.xz | |
USB: EHCI: compute full-speed bandwidth usage correctly
Although the bandwidth statistics maintained by ehci-hcd show up only
in the /sys/kernel/debug/usb/devices file, they ought to be calculated
correctly. The calculation for full-speed isochronous endpoints is
wrong; it mistakenly yields bytes per microframe instead of bytes per
frame. The "interval" value, which is in frames, should not be
converted to microframes.
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 34b5945..4b0903c 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1055,7 +1055,7 @@ iso_stream_init ( } else stream->raw_mask = smask_out [hs_transfers - 1]; bandwidth = stream->usecs + stream->c_usecs; - bandwidth /= interval << 3; + bandwidth /= interval; /* stream->splits gets created from raw_mask later */ stream->address = cpu_to_hc32(ehci, addr); |