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[PATCH] ide: IDE timing violation on reset

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Pretty much theoretical for non MMIO thankfully.  We _must_ use OUTBSYNC for
commands or they may be posted and thus ruin the 400nS required delay.

Signed-off-by: Alan Cox <[email protected]>
Acked-by: Bartlomiej Zolnierkiewicz <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alan Cox 2005-06-27 15:24:25 -07:00 • committed by Linus Torvalds
commit 68ad9910b0
1 changed files with 2 additions and 1 deletions
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3
drivers/ide/ide-iops.c
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@ -1181,7 +1181,8 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
pre_reset(drive);
SELECT_DRIVE(drive);
udelay (20);
hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
hwif->OUTBSYNC(drive, WIN_SRST, IDE_COMMAND_REG);
ndelay(400);
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
hwgroup->polling = 1;
__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);