android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
drivers/ide/ide-probe.c
View File

@ -255,9 +255,7 @@ err_misc:
* @cmd: command to use
*
* try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
* and waits for a response. It also monitors irqs while this is
* happening, in hope of automatically determining which one is
* being used by the interface.
* and waits for a response.
*
* Returns: 0 device was identified
* 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
* @cmd: command to use
*
* Issue the identify command and then do IRQ probing to
* complete the identification when needed by finding the
* IRQ the drive is attached to
* Issue the identify command.
*/
static int try_to_identify (ide_drive_t *drive, u8 cmd)
{
ide_hwif_t *hwif = drive->hwif;
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
* probe for it. Otherwise we'll get spurious
* interrupts during the identify-phase that
* the irq handler isn't expecting.
* Disable device IRQ. Otherwise we'll get spurious interrupts
* during the identify phase that the IRQ handler isn't expecting.
*/
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;
if (hwif->io_ports.ctl_addr)
tp_ops->set_irq(hwif, 0);
/* clear drive IRQ */
(void)tp_ops->read_status(hwif);
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;
return actual_try_to_identify(drive, cmd);
}
int ide_busy_sleep(ide_hwif_t *hwif, unsigned long timeout, int altstatus)