ide: take ide_lock for prefetch disable/enable in do_special()

Take ide_lock for prefetch disable/enable in do_special(),
then cleanup cmd640 and ht6560b host drivers.

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

1 files changed, 0 insertions, 6 deletions

diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c
index 0e9275d7459c..4aa48104e0c1 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -632,7 +632,6 @@ static void cmd640_set_mode (unsigned int index, u8 pio_mode, unsigned int cycle
 
 static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        unsigned long flags;
         unsigned int index = 0, cycle_time;
         u8 b;
 
@@ -655,12 +654,7 @@ static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
 
                 case 8: /* set prefetch off */
                 case 9: /* set prefetch on */
-                        /*
-                         * take ide_lock for drive->[no_]unmask/[no_]io_32bit
-                         */
-                        spin_lock_irqsave(&ide_lock, flags);
                         set_prefetch_mode(index, pio & 1);
-                        spin_unlock_irqrestore(&ide_lock, flags);
                         printk("%s: %sabled cmd640 prefetch\n", drive->name, (pio & 1) ? "en" : "dis");
                         return;
         }