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sky2: Don't receive packets when the napi budget == 0
author
Eric W. Biederman
<ebiederm@xmission.com>
Sat, 15 Mar 2014 01:05:26 +0000
(18:05 -0700)
committer
David S. Miller
<davem@davemloft.net>
Sat, 15 Mar 2014 02:52:48 +0000
(22:52 -0400)
Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.
This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/marvell/sky2.c
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diff --git
a/drivers/net/ethernet/marvell/sky2.c
b/drivers/net/ethernet/marvell/sky2.c
index
5a5b237
..
d524676
100644
(file)
--- a/
drivers/net/ethernet/marvell/sky2.c
+++ b/
drivers/net/ethernet/marvell/sky2.c
@@
-2735,6
+2735,9
@@
static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
unsigned int total_bytes[2] = { 0 };
unsigned int total_packets[2] = { 0 };
+ if (to_do <= 0)
+ return work_done;
+
rmb();
do {
struct sky2_port *sky2;