[TG3]: Refine nvram locking
Add nvram lock count so that calls to tg3_nvram_lock()/unlock() can
be nested. Add error checking to all callers of tg3_nvram_lock()
where appropriate. To prevent nvram lock failures after halting the
firmware, it is also necessary to release firmware's nvram lock in
tg3_halt_cpu().
Update version to 3.48.
Based on David Miller's initial patch.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 890e163..e824330 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2275,6 +2275,7 @@
dma_addr_t stats_mapping;
struct work_struct reset_task;
+ int nvram_lock_cnt;
u32 nvram_size;
u32 nvram_pagesize;
u32 nvram_jedecnum;