linux-kernel - [PATCH 1/7] ide-pmac: bugfix for media-bay support rework

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Date:	Fri, 13 Jun 2008 01:12:24 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	linux-ide@...r.kernel.org
Cc:	linuxppc-dev@...abs.org,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/7] ide-pmac: bugfix for media-bay support rework

Fix bug introduced by:

commit 2dde7861afa23cd59db83515cb0b810b92b220aa
Author: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Date:   Fri Apr 18 00:46:23 2008 +0200

    ide: rework PowerMac media-bay support (take 2)
...

[ Yeah, I suck. ]

bay->cd_index shouldn't be changed if IDE devices are not present
or retry operations won't happen.

Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
first three patches are meant for 2.6.26, the rest for 2.6.27

drivers/macintosh/mediabay.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: b/drivers/macintosh/mediabay.c
===================================================================
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -556,7 +556,8 @@ static void media_bay_step(int i)
 				printk("mediabay %d, registering IDE...\n", i);
 				pmu_suspend();
 				ide_port_scan(bay->cd_port);
-				bay->cd_index = bay->cd_port->index;
+				if (bay->cd_port->present)
+					bay->cd_index = bay->cd_port->index;
 				pmu_resume();
 			}
 			if (bay->cd_index == -1) {
--
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