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ide: remove no longer needed IRQ auto-probing from try_to_identify() (v2)

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v2:
Update actual_try_to_identify() documentation.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-03-24 23:22:53 +01:00
parent 8b07ed26f8
commit f77e03c68f
1 changed files with 7 additions and 43 deletions
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50
drivers/ide/ide-probe.c
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@ -255,9 +255,7 @@ err_misc:
* @cmd: command to use * @cmd: command to use
* *
* try_to_identify() sends an ATA(PI) IDENTIFY request to a drive * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
* and waits for a response. It also monitors irqs while this is * and waits for a response.
* happening, in hope of automatically determining which one is
* being used by the interface.
* *
* Returns: 0 device was identified * Returns: 0 device was identified
* 1 device timed-out (no response to identify request) * 1 device timed-out (no response to identify request)
@ -334,56 +332,22 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
* @drive: drive to probe * @drive: drive to probe
* @cmd: command to use * @cmd: command to use
* *
* Issue the identify command and then do IRQ probing to * Issue the identify command.
* complete the identification when needed by finding the
* IRQ the drive is attached to
*/ */
static int try_to_identify (ide_drive_t *drive, u8 cmd) static int try_to_identify (ide_drive_t *drive, u8 cmd)
{ {
ide_hwif_t *hwif = drive->hwif; ide_hwif_t *hwif = drive->hwif;
const struct ide_tp_ops *tp_ops = hwif->tp_ops; const struct ide_tp_ops *tp_ops = hwif->tp_ops;
int retval;
int autoprobe = 0;
unsigned long cookie = 0;
/* /*
* Disable device irq unless we need to * Disable device IRQ. Otherwise we'll get spurious interrupts
* probe for it. Otherwise we'll get spurious * during the identify phase that the IRQ handler isn't expecting.
* interrupts during the identify-phase that
* the irq handler isn't expecting.
*/ */
if (hwif->io_ports.ctl_addr) { if (hwif->io_ports.ctl_addr)
if (!hwif->irq) {
autoprobe = 1;
cookie = probe_irq_on();
}
tp_ops->set_irq(hwif, autoprobe);
}
retval = actual_try_to_identify(drive, cmd);
if (autoprobe) {
int irq;
tp_ops->set_irq(hwif, 0); tp_ops->set_irq(hwif, 0);
/* clear drive IRQ */
(void)tp_ops->read_status(hwif); return actual_try_to_identify(drive, cmd);
udelay(5);
irq = probe_irq_off(cookie);
if (!hwif->irq) {
if (irq > 0) {
hwif->irq = irq;
} else {
/* Mmmm.. multiple IRQs..
* don't know which was ours
*/
printk(KERN_ERR "%s: IRQ probe failed (0x%lx)\n",
drive->name, cookie);
}
}
}
return retval;
} }
int ide_busy_sleep(ide_hwif_t *hwif, unsigned long timeout, int altstatus) int ide_busy_sleep(ide_hwif_t *hwif, unsigned long timeout, int altstatus)