ath5k: fix suspend-related oops on rmmod

Based on a patch by Elias Oltmanns, we call ath5k_init in resume even
if we didn't previously open the device.  Besides starting up the
device unnecessarily, this also causes an oops on rmmod because
mac80211 will not invoke ath5k_stop and softirqs are left running after
the module has been unloaded.  Add a new state bit, ATH_STAT_STARTED,
to indicate that we have been started up.

Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Elias Oltmanns <eo@nebensachen.de>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath5k/base.h b/drivers/net/wireless/ath5k/base.h
index 9d0b728928e3..06d1054ca94b 100644
--- a/drivers/net/wireless/ath5k/base.h
+++ b/drivers/net/wireless/ath5k/base.h
@@ -128,11 +128,12 @@ struct ath5k_softc {
         size_t                  desc_len;       /* size of TX/RX descriptors */
         u16                     cachelsz;       /* cache line size */
 
-        DECLARE_BITMAP(status, 4);
+        DECLARE_BITMAP(status, 5);
 #define ATH_STAT_INVALID        0               /* disable hardware accesses */
 #define ATH_STAT_MRRETRY        1               /* multi-rate retry support */
 #define ATH_STAT_PROMISC        2
 #define ATH_STAT_LEDSOFT        3               /* enable LED gpio status */
+#define ATH_STAT_STARTED        4               /* opened & irqs enabled */
 
         unsigned int            filter_flags;   /* HW flags, AR5K_RX_FILTER_* */
         unsigned int            curmode;        /* current phy mode */