via-velocity: Take spinlock on set coalesce
velocity_set_coalesce touches ISR and some other sensitive registers not
covered by the rtnl lock, so take the velocity spinlock.
Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index 1330697..54bafda 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -3341,6 +3341,7 @@
{
struct velocity_info *vptr = netdev_priv(dev);
int max_us = 0x3f * 64;
+ unsigned long flags;
/* 6 bits of */
if (ecmd->tx_coalesce_usecs > max_us)
@@ -3362,6 +3363,7 @@
ecmd->tx_coalesce_usecs);
/* Setup the interrupt suppression and queue timers */
+ spin_lock_irqsave(&vptr->lock, flags);
mac_disable_int(vptr->mac_regs);
setup_adaptive_interrupts(vptr);
setup_queue_timers(vptr);
@@ -3369,6 +3371,7 @@
mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
mac_clear_isr(vptr->mac_regs);
mac_enable_int(vptr->mac_regs);
+ spin_unlock_irqrestore(&vptr->lock, flags);
return 0;
}