| Message ID | 20201027225454.3492351-4-bigeasy@linutronix.de (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | in_interrupt() cleanup, part 2 | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (8cb17737940b156329cb5210669b9c9b23f4dd56) |
| snowpatch_ozlabs/checkpatch | success | |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c index 2fc10a36afa4a..7e85cf943be11 100644 --- a/drivers/net/ethernet/nvidia/forcedeth.c +++ b/drivers/net/ethernet/nvidia/forcedeth.c @@ -1666,11 +1666,7 @@ static void nv_update_stats(struct net_device *dev) struct fe_priv *np = netdev_priv(dev); u8 __iomem *base = get_hwbase(dev); - /* If it happens that this is run in top-half context, then - * replace the spin_lock of hwstats_lock with - * spin_lock_irqsave() in calling functions. */ - WARN_ONCE(in_irq(), "forcedeth: estats spin_lock(_bh) from top-half"); - assert_spin_locked(&np->hwstats_lock); + lockdep_assert_held(&np->hwstats_lock); /* query hardware */ np->estats.tx_bytes += readl(base + NvRegTxCnt);
nv_update_stats() triggers a WARN_ON() when invoked from hard interrupt context because the locks in use are not hard interrupt safe. It also has an assert_spin_locked() which was the lock check before the lockdep era. Lockdep has way broader locking correctness checks and covers both issues, so replace the warning and the lock assert with lockdep_assert_held(). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Rain River <rain.1986.08.12@gmail.com> Cc: Zhu Yanjun <zyjzyj2000@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: netdev@vger.kernel.org --- drivers/net/ethernet/nvidia/forcedeth.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)