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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-03-29 19:48:21 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-03-29 19:48:21 +0100
commitf367bed005b06db7067fc378a5f2253fac54e5d9 (patch)
treef881f467c6c59452b0b74ccc06499cef24ab60e0 /drivers/ide
parentaf8be4e4b316df36a00c1e52a9970c253783b57e (diff)
Revert "ide: change master/slave IDENTIFY order"
This reverts commit b140b99c413ce410197cfcd4014e757cd745226a. [ conflict in drivers/ide/ide-probe.c fixed manually ] It turned out that probing order change causes problems for some drives: http://bugzilla.kernel.org/show_bug.cgi?id=10239 Since root causes are still being investigated and are unlikely to be fixed before 2.6.25 lets revert this change for now. As a result cable detection becomes less reliable when compared with 2.6.24 but the affected drives are useable again. Reported-by: Richard Genoud <richard.genoud@gmail.com> Bisected-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
-rw-r--r--drivers/ide/ide-iops.c1
-rw-r--r--drivers/ide/ide-probe.c5
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index c419266234a..01b92208f09 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -595,6 +595,7 @@ u8 eighty_ninty_three (ide_drive_t *drive)
/*
* FIXME:
+ * - change master/slave IDENTIFY order
* - force bit13 (80c cable present) check also for !ivb devices
* (unless the slave device is pre-ATA3)
*/
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 194ecb0049e..47a114927c3 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -774,9 +774,10 @@ static int ide_probe_port(ide_hwif_t *hwif)
printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name);
/*
- * Need to probe slave device first to make it release PDIAG-.
+ * Second drive should only exist if first drive was found,
+ * but a lot of cdrom drives are configured as single slaves.
*/
- for (unit = MAX_DRIVES - 1; unit >= 0; unit--) {
+ for (unit = 0; unit < MAX_DRIVES; ++unit) {
ide_drive_t *drive = &hwif->drives[unit];
drive->dn = (hwif->channel ? 2 : 0) + unit;
(void) probe_for_drive(drive);