Commit d5550094 authored by Sarah Sharp's avatar Sarah Sharp Committed by Greg Kroah-Hartman

USB: ehci: Fix isoc scheduling boundary checking.

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: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent f1a0743b
...@@ -1425,6 +1425,7 @@ iso_stream_schedule ( ...@@ -1425,6 +1425,7 @@ iso_stream_schedule (
status = -EFBIG; status = -EFBIG;
goto fail; goto fail;
} }
stream->next_uframe = start;
goto ready; goto ready;
} }
......
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