ide: IORDY handling fixes
Add ide_pio_need_iordy() helper and convert host drivers to use it.
This fixes it8172, it8213, pdc202xx_old, piix, slc90e66 and siimage
host drivers to handle IORDY correctly.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/sl82c105.c b/drivers/ide/sl82c105.c
index 0924abf..88ac470 100644
--- a/drivers/ide/sl82c105.c
+++ b/drivers/ide/sl82c105.c
@@ -61,8 +61,7 @@
if (cmd_off == 0)
cmd_off = 1;
- if ((pio > 2 || ata_id_has_iordy(drive->id)) &&
- !(pio > 4 && ata_id_is_cfa(drive->id)))
+ if (ide_pio_need_iordy(drive, pio))
iordy = 0x40;
return (cmd_on - 1) << 8 | (cmd_off - 1) | iordy;