[PATCH V2] ath9k: Re-enable interrupts after a channel change failure

[Robert Shade <robert.shade@gmail.com>]

ath_complete_reset will not be called if ath9k_hw_reset
is unsuccessful, so we need to re-enable intertupts to
balence the previous ath_prepare_reset call.  Also schedule a
reset as a best effort method to recover the chip from
whatever state caused the channel change failure.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=55771

Signed-off-by: Robert Shade <robert.shade@gmail.com>
---
V2
- (hopefully) Fixed whitespace issues
- Removed call to ath9k_hw_set_interrupts
---
 drivers/net/wireless/ath/ath9k/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 24650fd4..83608be 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -280,6 +280,10 @@ static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan)
 	if (r) {
 		ath_err(common,
 			"Unable to reset channel, reset status %d\n", r);
+
+		ath9k_hw_enable_interrupts(ah);
+		ath9k_queue_reset(sc, RESET_TYPE_BB_HANG);
+
 		goto out;
 	}
 
-- 
1.8.2