greybus: ignore a null cookie when canceling buffer
It's possible for an in-flight buffer to be recorded as sent *after*
a thread has begin the process of canceling it. In that case the
Greybus message cookie will be set to NULL, and that value can end
up getting passed to buffer_cancel(). Change buffer_cancel() so
it properly handles (ignores) a null cookie pointer.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
1 file changed
tree: 8a0f9118c1f8e3bee8c7f05ac2e64973b39e5bd8
- drivers/