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

v2:
Update actual_try_to_identify() documentation.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 7 insertions, 43 deletions

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index ebc328c2e7ee..c63c07807583 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -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)