luck/tmp_suning_uos_patched
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USB: ehci: Fix isoc scheduling boundary checking.

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The EHCI driver does some bounds checking when it's scheduling an iTD for
an active endpoint.  It sets the local variable start to
stream->next_uframe and moves that variable further in the schedule if
necessary.  However, the driver fails to do anything with start before
jumping to the ready label and setting the URB's starting frame to
stream->next_uframe.  Alan Stern confirms the EHCI driver should set
stream->next_uframe to start before jumping.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sarah Sharp 2009-10-06 13:45:59 -07:00 committed by Greg Kroah-Hartman
parent f1a0743bc0
commit d55500941f
1 changed files with 1 additions and 0 deletions
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drivers/usb/host/ehci-sched.c
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@ -1425,6 +1425,7 @@ iso_stream_schedule (
status = -EFBIG; status = -EFBIG;
goto fail; goto fail;
} }
stream->next_uframe = start;
goto ready; goto ready;
} }