diff options
| author | Prashant Sreedharan <prashant@broadcom.com> | 2015-01-14 11:33:49 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-14 17:05:50 -0500 |
| commit | 4fd190a938cbb28ac9d42c5c86f5c829cc014537 (patch) | |
| tree | 7c6055ad7d3f9ed4e77b32bc28a81e8253e56ca2 | |
| parent | b0d11b42785b70e19bc6a3122eead3f7969a7589 (diff) | |
| download | linux-4fd190a938cbb28ac9d42c5c86f5c829cc014537.tar.bz2 | |
tg3: tg3_timer() should grab tp->lock before checking for tp->irq_sync
This is to avoid the race between tg3_timer() and the execution paths
which does not invoke tg3_timer_stop() and releases tp->lock before
calling synchronize_irq()
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/broadcom/tg3.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 553dcd8a9df2..2dbd4aea01f3 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -10903,11 +10903,13 @@ static void tg3_timer(unsigned long __opaque) { struct tg3 *tp = (struct tg3 *) __opaque; - if (tp->irq_sync || tg3_flag(tp, RESET_TASK_PENDING)) - goto restart_timer; - spin_lock(&tp->lock); + if (tp->irq_sync || tg3_flag(tp, RESET_TASK_PENDING)) { + spin_unlock(&tp->lock); + goto restart_timer; + } + if (tg3_asic_rev(tp) == ASIC_REV_5717 || tg3_flag(tp, 57765_CLASS)) tg3_chk_missed_msi(tp); |