luck/tmp_suning_uos_patched
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ide: never called printk statement in ide-taskfile.c::wait_drive_not_busy

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Look at wait_drive_not_busy in drivers/ide/ide-taskfile.c:

    static u8 wait_drive_not_busy(ide_drive_t *drive)
    {
            ide_hwif_t *hwif = HWIF(drive);
            int retries = 100;
            u8 stat;

            /*
             * Last sector was transfered, wait until drive is ready.
             * This can take up to 10 usec, but we will wait max 1 ms
             * (drive_cmd_intr() waits that long).
             */
            while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
                    udelay(10);

            if (!retries)
                    printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);

            return stat;
    }

`printk' is never called because `retries' never holds zero at the
outside of `while' loop: when `retries' holds zero at the while's loop
condition, `retries' will hold -1 at the if condition.

Signed-off-by: Masatake YAMATO <jet@gyve.org>
Cc: Chuck Ebbert <cebbert@redhat.com>
Cc: joe@perches.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Masatake YAMATO 2007-07-03 22:28:34 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 872aad45d6
commit b42fa13311
1 changed files with 8 additions and 4 deletions
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12
drivers/ide/ide-taskfile.c
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@ -238,7 +238,7 @@ EXPORT_SYMBOL(task_no_data_intr);
static u8 wait_drive_not_busy(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
int retries = 100;
int retries;
u8 stat;
/*
@ -246,10 +246,14 @@ static u8 wait_drive_not_busy(ide_drive_t *drive)
* This can take up to 10 usec, but we will wait max 1 ms
* (drive_cmd_intr() waits that long).
*/
while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
udelay(10);
for (retries = 0; retries < 100; retries++) {
if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT)
udelay(10);
else
break;
}
if (!retries)
if (stat & BUSY_STAT)
printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
return stat;