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From: Karsten Keil <kkeil@suse.de>
To: Jukka Partanen <jspartanen@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.4.32] Fix AVM C4 ISDN card init problems with newer CPUs
Date: Thu, 3 Aug 2006 19:31:04 +0200	[thread overview]
Message-ID: <20060803173104.GA22317@pingi.kke.suse.de> (raw)
In-Reply-To: <d50597c30608030953l41e8661dg1c10faeac31cc87f@mail.gmail.com>

Yes, that should be go in.

AVM C4 ISDN NIC: Add three memory barriers, taken from 2.6.7,
(they are there in 2.6.17.7 too), to fix module initialization
problems appearing with at least some newer Celerons and
Pentium III.

Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Jukka Partanen <jspartanen@gmail.com>

--- drivers/isdn/avmb1/c4.c.orig	2006-08-03 19:32:17.000000000 +0000
+++ drivers/isdn/avmb1/c4.c	2006-08-03 19:32:55.000000000 +0000
@@ -151,6 +151,7 @@
 	while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) {
 		if (!time_before(jiffies, stop))
 			return -1;
+		mb();
 	}
 	return 0;
 }
@@ -305,6 +306,7 @@
 		if (!time_before(jiffies, stop))
 			return;
 		c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
+		mb();
 	}

 	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
@@ -328,6 +330,7 @@
 		if (!time_before(jiffies, stop))
 			return 2;
 		c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
+		mb();
 	}

 	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);

-- 
Karsten Keil
SuSE Labs
ISDN development

  reply	other threads:[~2006-08-03 17:31 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-03 16:53 Jukka Partanen
2006-08-03 17:31 ` Karsten Keil [this message]
2006-08-04 10:00   ` Alan Cox
2006-08-03 17:56 ` Alan Cox
2006-08-04  5:08   ` Willy Tarreau
2006-08-04  6:56   ` Willy Tarreau
2006-08-04 10:39     ` Michael Buesch
2006-08-04 12:21       ` Willy Tarreau
2006-08-04 20:14       ` Willy Tarreau

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