b43: reinit on too many PHY TX errors

Restart the hardware on too many PHY TX errors. A thousand PHY TX errors
per 15 seconds means we won't be able to recover for sure.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index 97ea96320c7e..d07b56e5ea69 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -393,6 +393,8 @@ enum {
 #define B43_DEFAULT_SHORT_RETRY_LIMIT   7
 #define B43_DEFAULT_LONG_RETRY_LIMIT    4
 
+#define B43_PHY_TX_BADNESS_LIMIT        1000
+
 /* Max size of a security key */
 #define B43_SEC_KEYSIZE                 16
 /* Security algorithms. */
@@ -548,6 +550,9 @@ struct b43_phy {
         /* OFDM address read/write caching for hardware auto-increment. */
         u16 ofdm_addr;
         u8 ofdm_valid; /* 0: invalid, 1: read, 2: write */
+
+        /* PHY TX errors counter. */
+        atomic_t txerr_cnt;
 };
 
 /* Data structures for DMA transmission, per 80211 core. */