From: Stephen Hemminger <shemminger@linux-foundation.org>
To: kristjan <kristjan.ugrin@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jeff Garzik <jgarzik@pobox.com>
Cc: netdev@vger.kernel.org
Subject: [PATCH 1/2] tulip: napi full quantum bug
Date: Thu, 13 Dec 2007 09:35:45 -0800 [thread overview]
Message-ID: <20071213093545.436b8f8e@freepuppy.rosehill> (raw)
In-Reply-To: <1dd3c7c0712080344q414fe7c3w32d7ca6d900a52b5@mail.gmail.com>
This should fix the kernel warn/oops reported while routing.
The tulip driver has a fencepost bug with new NAPI in 2.6.24
It has an off by one bug if a full quantum is reached.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
--- a/drivers/net/tulip/interrupt.c 2007-12-13 09:20:27.000000000 -0800
+++ b/drivers/net/tulip/interrupt.c 2007-12-13 09:23:34.000000000 -0800
@@ -151,7 +151,8 @@ int tulip_poll(struct napi_struct *napi,
if (tulip_debug > 5)
printk(KERN_DEBUG "%s: In tulip_rx(), entry %d %8.8x.\n",
dev->name, entry, status);
- if (work_done++ >= budget)
+
+ if (++work_done >= budget)
goto not_done;
if ((status & 0x38008300) != 0x0300) {
next parent reply other threads:[~2007-12-13 17:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1dd3c7c0711291113v5c197561m3121afc8f676db5f@mail.gmail.com>
[not found] ` <20071129133622.56301c9d@freepuppy.rosehill>
[not found] ` <1dd3c7c0711291430r1086a46ajc4af199903a7a65e@mail.gmail.com>
[not found] ` <20071207161435.42ae67f8@freepuppy.rosehill>
[not found] ` <1dd3c7c0712080344q414fe7c3w32d7ca6d900a52b5@mail.gmail.com>
2007-12-13 17:35 ` Stephen Hemminger [this message]
2007-12-16 21:40 ` [PATCH 1/2] tulip: napi full quantum bug David Miller
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