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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-03-29 19:48:21 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-03-29 19:48:21 +0100 |
| commit | f367bed005b06db7067fc378a5f2253fac54e5d9 (patch) | |
| tree | f881f467c6c59452b0b74ccc06499cef24ab60e0 | |
| parent | af8be4e4b316df36a00c1e52a9970c253783b57e (diff) | |
| download | linux-f367bed005b06db7067fc378a5f2253fac54e5d9.tar.bz2 | |
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>
| -rw-r--r-- | drivers/ide/ide-iops.c | 1 | ||||
| -rw-r--r-- | drivers/ide/ide-probe.c | 5 |
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index c419266234a7..01b92208f09d 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 194ecb0049eb..47a114927c31 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); |