diff options
| author | Michael Büsch <m@bues.ch> | 2011-11-16 23:55:46 +0100 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2013-01-16 16:44:58 -0500 |
| commit | 89b56467c5ee10ab80c44aa1fe03d461deaf0c92 (patch) | |
| tree | 8c6ee3a3d71d03c627ebec7bc64dcb4fa5a4fb03 | |
| parent | 94bad843f7453e4353703fb4b75afde2fdeb3425 (diff) | |
p54spi: Fix workqueue deadlock
commit 2d1618170eb493d18f66f2ac03775409a6fb97c6 upstream.
priv->work must not be synced while priv->mutex is locked, because
the mutex is taken in the work handler.
Move cancel_work_sync down to after the device shutdown code.
This is safe, because the work handler checks fw_state and bails out
early in case of a race.
Signed-off-by: Michael Buesch <m@bues.ch>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -rw-r--r-- | drivers/net/wireless/p54/p54spi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/wireless/p54/p54spi.c b/drivers/net/wireless/p54/p54spi.c index 4cede24069ab..8cf0301cbf67 100644 --- a/drivers/net/wireless/p54/p54spi.c +++ b/drivers/net/wireless/p54/p54spi.c @@ -582,8 +582,6 @@ static void p54spi_op_stop(struct ieee80211_hw *dev) WARN_ON(priv->fw_state != FW_STATE_READY); - cancel_work_sync(&priv->work); - p54spi_power_off(priv); spin_lock_irqsave(&priv->tx_lock, flags); INIT_LIST_HEAD(&priv->tx_pending); @@ -591,6 +589,8 @@ static void p54spi_op_stop(struct ieee80211_hw *dev) priv->fw_state = FW_STATE_OFF; mutex_unlock(&priv->mutex); + + cancel_work_sync(&priv->work); } static int __devinit p54spi_probe(struct spi_device *spi) |