This is a note to let you know that I've just added the patch titled
igb: Fix lack of flush after register write and before delay
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
igb-fix-lack-of-flush-after-register-write-and-before-delay.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 064b43304ed8ede8e13ff7b4338d09fd37bcffb1 Mon Sep 17 00:00:00 2001
From: Carolyn Wyborny <[email protected]>
Date: Sat, 25 Jun 2011 13:18:12 +0000
Subject: igb: Fix lack of flush after register write and before delay
From: Carolyn Wyborny <[email protected]>
commit 064b43304ed8ede8e13ff7b4338d09fd37bcffb1 upstream.
Register writes followed by a delay are required to have a flush
before the delay in order to commit the values to the register. Without
the flush, the code following the delay may not function correctly.
Reported-by: Tong Ho <[email protected]>
Reported-by: Guenter Roeck <[email protected]>
Signed-off-by: Carolyn Wyborny <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/igb/e1000_82575.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/igb/e1000_82575.c
+++ b/drivers/net/igb/e1000_82575.c
@@ -1735,6 +1735,7 @@ static s32 igb_reset_hw_82580(struct e10
ctrl |= E1000_CTRL_RST;
wr32(E1000_CTRL, ctrl);
+ wrfl();
/* Add delay to insure DEV_RST has time to complete */
if (global_device_reset)
Patches currently in stable-queue which might be from [email protected]
are
queue-3.0/igb-fix-lack-of-flush-after-register-write-and-before-delay.patch
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