PowerMac bootup with CONFIG_IDE=y oopses in ide_pio_cycle_time():
because "ide: try to use PIO Mode 0 during probe if possible" causes
pmac_ide_set_pio_mode() now to be called before drive->id has been set.
It does the right thing if id is not set, so long as we check for that.
Signed-off-by: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
---
drivers/ide/ide-timings.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- lnext/drivers/ide/ide-timings.c 2009-04-08 18:25:55.000000000 +0100
+++ linux/drivers/ide/ide-timings.c 2009-06-03 19:45:58.000000000 +0100
@@ -84,7 +84,7 @@ u16 ide_pio_cycle_time(ide_drive_t *driv
struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
u16 cycle = 0;
- if (id[ATA_ID_FIELD_VALID] & 2) {
+ if (id && (id[ATA_ID_FIELD_VALID] & 2)) {
if (ata_id_has_iordy(drive->id))
cycle = id[ATA_ID_EIDE_PIO_IORDY];
else
--
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