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| author | John Stultz <john.stultz@linaro.org> | 2011-07-20 20:09:34 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-17 13:55:51 -0400 |
| commit | e839bad463ad3348f3d239512839c93baf57a1a9 (patch) | |
| tree | 361e6c3b40aa7dd943793b90e29372cb1fa24f73 /drivers/usb/class/usbtmc.c | |
| parent | 024d78c79eb4ee5395ed8f13233b5b15e3445db3 (diff) | |
usb: musb: fix oops on musb_gadget_pullup
commit 72c487dfb94d02025fb7437dfe2314d836d5a9ab upstream.
an 'unhandled fault' is causes when a gadget driver calls
usb_gadget_connect() while the USB cable isn't plugged into
the OTG port.
the fault is caused by an access to MUSB's memory space
while its clock is turned off due to pm_runtime kicking
in.
in order to fix the fault, we enclose musb_gadget_pullup()
with pm_runtime_get_sync() ... pm_runtime_put() calls to
be sure we will always reach that path with clock turned on.
[ balbi@ti.com : simplified commit log; removed few things
which didn't belong there ]
Reported-by: Zach Pfeffer <zach.pfeffer@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/class/usbtmc.c')
0 files changed, 0 insertions, 0 deletions