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authorMichael Chan <mchan@broadcom.com>2005-05-29 14:59:49 -0700
committerDavid S. Miller <davem@davemloft.net>2005-05-29 14:59:49 -0700
commit1b62815193f6c20c60958e5347751155833e3d35 (patch)
treec775c46e63084d6a63e515a303cebf701a673848 /drivers/net
parentd4bc3927d284784b3f0bff05b4eed2242cc3e226 (diff)
[TG3]: Fix bug in tg3_load_firmware_cpu
Add tg3_nvram_lock() and tg3_nvram_unlock() calls around tg3_halt_cpu(). It is possible that the bootcode may be loading code from nvram during this call and stopping the cpu without getting the lock may cause uncompleted nvram data to be left in the nvram data register. Subsequent calls to read/write nvram data will fail. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/tg3.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 82afd26a829f..fc9b5cd957aa 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -4370,7 +4370,12 @@ static int tg3_load_firmware_cpu(struct tg3 *tp, u32 cpu_base, u32 cpu_scratch_b
*/
tp->tg3_flags |= TG3_FLAG_PCIX_TARGET_HWBUG;
+ /* It is possible that bootcode is still loading at this point.
+ * Get the nvram lock first before halting the cpu.
+ */
+ tg3_nvram_lock(tp);
err = tg3_halt_cpu(tp, cpu_base);
+ tg3_nvram_unlock(tp);
if (err)
goto out;