From: Eric W. Biederman Date: Sat, 15 Mar 2014 01:05:26 +0000 (-0700) Subject: sky2: Don't receive packets when the napi budget == 0 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=21ceda26d7418c688dd9186eb46a49c4c0887e61;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git sky2: Don't receive packets when the napi budget == 0 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" Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index 5a5b23741179..d524676fdff4 100644 --- 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;