[PATCH] fix 'cat /proc/ide/<cd|dvd>/identify' hang (CONFIG_IDE_TASKFILE=y)

Some devices need more time to become non-busy after command completion,
so use the same timeout in wait_drive_not_busy() (called from task_in_intr()
if CONFIG_IDE_TASKFILE_IO=y) as in drive_cmd_intr().

Thanks to Mark Haverkamp <markh@osdl.org> for help in fixing this.

drivers/ide/ide-taskfile.c

@@ -772,14 +772,20 @@ EXPORT_SYMBOL(task_mulout_intr);
 static u8 wait_drive_not_busy(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = HWIF(drive);
-	int retries = 5;
+	int retries = 100;
 	u8 stat;
+
 	/*
-	 * (ks) Last sector was transfered, wait until drive is ready.
-	 * This can take up to 10 usec. We willl wait max 50 us.
+	 * 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;
 }