b43: Add simple firmware watchdog

This adds a simple firmware watchdog for the opensource firmware.
This will check every 15 seconds, if the firmware zeroed out the watchdog
register. The firmware will do this in its eventloop.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index 532365f5ecef..edcdfa366452 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -441,6 +441,8 @@ enum {
 #define B43_FWPANIC_DIE                 0 /* Firmware died. Don't auto-restart it. */
 #define B43_FWPANIC_RESTART             1 /* Firmware died. Schedule a controller reset. */
 
+/* The firmware register that contains the watchdog counter. */
+#define B43_WATCHDOG_REG                1
 
 /* Device specific rate values.
  * The actual values defined here are (rate_in_mbps * 2).