diff options
| author | Jonathan Toppins <jtoppins@redhat.com> | 2018-03-14 12:36:25 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-14 13:43:02 -0400 |
| commit | ea91df6d8a55836c7401eb6d5d4d828b659d8d67 (patch) | |
| tree | 3e3b6edcd3b4c5d15345b5db6ef975341b08223d | |
| parent | d52e5a7e7ca49457dd31fc8b42fb7c0d58a31221 (diff) | |
tg3: prevent scheduling while atomic splat
The problem was introduced in commit
506b0a395f26 ("[netdrv] tg3: APE heartbeat changes"). The bug occurs
because tp->lock spinlock is held which is obtained in tg3_start
by way of tg3_full_lock(), line 11571. The documentation for usleep_range()
specifically states it cannot be used inside a spinlock.
Fixes: 506b0a395f26 ("[netdrv] tg3: APE heartbeat changes")
Signed-off-by: Jonathan Toppins <jtoppins@redhat.com>
Acked-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/broadcom/tg3.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index c1841db1b500..f2593978ae75 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -820,7 +820,7 @@ static int tg3_ape_event_lock(struct tg3 *tp, u32 timeout_us) tg3_ape_unlock(tp, TG3_APE_LOCK_MEM); - usleep_range(10, 20); + udelay(10); timeout_us -= (timeout_us > 10) ? 10 : timeout_us; } |