Commit 703a4e55 authored Apr 16, 2013 by Dan Carpenter Committed by John W. Linville Apr 22, 2013

ath9k: use GFP_ATOMIC under spinlock



This is called with spinlocks held so we have to use GFP_ATOMIC.  It's
the sc_pcu_lock in ath9k_stop() that's the issue.  The call tree looks
like this:

ath9k_stop()
ath_prepare_reset()
ath_stoprecv()
ath_flushrecv()
ath_rx_tasklet()
ath9k_dfs_process_phyerr()
pd->add_pulse() => dpd_add_pulse()
channel_detector_get()
channel_detector_create()
pri_detector_init()

channel_detector_create() uses GFP_ATOMIC as well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Acked-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent ca21cfde

drivers/net/wireless/ath/ath9k/dfs_pri_detector.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -406,7 +406,8 @@ static struct pri_sequence pri_detector_add_pulse(struct pri_detector de,
		struct pri_detector pri_detector_init(const struct radar_detector_specs rs)
		{
		struct pri_detector *de;
		de = kzalloc(sizeof(*de), GFP_KERNEL);

		de = kzalloc(sizeof(*de), GFP_ATOMIC);
		if (de == NULL)
		return NULL;
		de->exit = pri_detector_exit;