diff options
| author | Wang Zhi <[email protected]> | 2011-08-17 10:39:31 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2011-08-22 13:38:52 -0700 |
| commit | d0f2fb2500b1c5fe4967eb45d8c9bc758d7aef80 (patch) | |
| tree | 396bb27c52730fc3f53547c5232f8f9ca428801c /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 7e1805844da18a37e6d251d286f93c94b52d791e (diff) | |
USB: EHCI: Do not rely on PORT_SUSPEND to stop USB resuming in ehci_bus_resume().
From EHCI Spec p.28 HC should clear PORT_SUSPEND when SW clears
PORT_RESUME. In Intel Oaktrail platform, MPH (Multi-Port Host
Controller) core clears PORT_SUSPEND directly when SW sets PORT_RESUME
bit. If we rely on PORT_SUSPEND bit to stop USB resume, we will miss
the action of clearing PORT_RESUME. This will cause unexpected long
resume signal on USB bus.
Signed-off-by: Wang Zhi <[email protected]>
Signed-off-by: Alan Stern <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions