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| author | Wojciech Dubowik <Wojciech.Dubowik@neratec.com> | 2014-09-18 08:30:41 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-09-22 16:02:15 -0400 |
| commit | 2ba7d144d39a596cf5d09390ee7de21cfb69cf2b (patch) | |
| tree | 34a085aed12e1dd542cd74e7327c36c6dfb02fc0 | |
| parent | fa5c107cc887886a04ee2dbce05af86de220ae48 (diff) | |
| download | linux-2ba7d144d39a596cf5d09390ee7de21cfb69cf2b.tar.gz | |
ath9k: Fix NULL pointer dereference on early irq
The ah struct might not have been initialized when
interrupt comes so check for it.
Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index e6ac8d2e610ca4..4b148bbb2bf6c4 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -513,7 +513,7 @@ irqreturn_t ath_isr(int irq, void *dev) * touch anything. Note this can happen early * on if the IRQ is shared. */ - if (test_bit(ATH_OP_INVALID, &common->op_flags)) + if (!ah || test_bit(ATH_OP_INVALID, &common->op_flags)) return IRQ_NONE; /* shared irq, not for us */ |