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Revert "ide: change master/slave IDENTIFY order" 

This reverts commit b140b99c41.

[ 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>
hifive-unleashed-5.1
Bartlomiej Zolnierkiewicz 2008-03-29 19:48:21 +01:00
parent af8be4e4b3
commit f367bed005
2 changed files with 4 additions and 2 deletions
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1
drivers/ide/ide-iops.c
View File

@ -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)
*/

5
drivers/ide/ide-probe.c
View File

@ -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);