Revert "Revert "ide: try to use PIO Mode 0 during probe if possible""

This reverts commit 24df31acaff8465d797f0006437b45ad0f2a5cb1.

The root cause of reported system hangs was (now fixed) sis5513 bug
and not "ide: try to use PIO Mode 0 during probe if possible" change
(commit 6029336426a2b43e4bc6f4a84be8789a047d139e) so the revert was
incorrect (it simply replaced one regression with the other one).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 4d76ba473097..63c53d65e875 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1046,6 +1046,15 @@ static void ide_port_init_devices(ide_hwif_t *hwif)
                 if (port_ops && port_ops->init_dev)
                         port_ops->init_dev(drive);
         }
+
+        ide_port_for_each_dev(i, drive, hwif) {
+                /*
+                 * default to PIO Mode 0 before we figure out
+                 * the most suited mode for the attached device
+                 */
+                if (port_ops && port_ops->set_pio_mode)
+                        port_ops->set_pio_mode(drive, 0);
+        }
 }
 
 static void ide_init_port(ide_hwif_t *hwif, unsigned int port,