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tg3: tg3_reset_task() needs to use rtnl_lock to synchronize

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Currently tg3_reset_task() uses only tp->lock for synchronizing with code
paths like tg3_open() etc. But since tp->lock is released before doing
synchronize_irq(), rtnl_lock should be taken in tg3_reset_task() to
synchronize it with other code paths.

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>
This commit is contained in:
Prashant Sreedharan 2015-01-14 11:34:17 -08:00 committed by David S. Miller
parent 4fd190a938
commit db84bf43ef
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/broadcom/tg3.c
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@ -11103,11 +11103,13 @@ static void tg3_reset_task(struct work_struct *work)
struct tg3 *tp = container_of(work, struct tg3, reset_task);
int err;
rtnl_lock();
tg3_full_lock(tp, 0);
if (!netif_running(tp->dev)) {
tg3_flag_clear(tp, RESET_TASK_PENDING);
tg3_full_unlock(tp);
rtnl_unlock();
return;
}
@ -11140,6 +11142,7 @@ out:
tg3_phy_start(tp);
tg3_flag_clear(tp, RESET_TASK_PENDING);
rtnl_unlock();
}
static int tg3_request_irq(struct tg3 *tp, int irq_num)