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| author | Bryan Freed <bfreed@chromium.org> | 2013-03-13 22:17:40 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-04-01 17:22:59 +0400 |
| commit | b0b36b861e434ee1c1a64cb39259e262f79af62e (patch) | |
| tree | 57c741bdba95e18eab28fe82c2396b7b959c0f2a /drivers/spi/spi-mpc512x-psc.c | |
| parent | 375981f2e14868be16cafbffd34a4f16a6ee01c6 (diff) | |
| download | linux-b0b36b861e434ee1c1a64cb39259e262f79af62e.tar.xz | |
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 <bfreed@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/spi/spi-mpc512x-psc.c')
0 files changed, 0 insertions, 0 deletions