spi: Unlock a spinlock before calling into the controller driver.

spi_pump_messages() calls into a controller driver with
unprepare_transfer_hardware() which is documented as "This may sleep".
As in the prepare_transfer_hardware() call below, we should release the
queue_lock spinlock before making the call.
Rework the logic a bit to hold queue_lock to protect the 'busy' flag,
then release it to call unprepare_transfer_hardware().

Signed-off-by: Bryan Freed <[email protected]>
Reviewed-by: Doug Anderson <[email protected]>
Signed-off-by: Doug Anderson <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Mark Brown <[email protected]>

0 files changed, 0 insertions, 0 deletions