ide: sanitize handling of IDE_HFLAG_NO_SET_MODE host flag
* Check for IDE_HFLAG_NO_SET_MODE host flag in ide_set_pio(),
ide_set_[pio,dma]_mode(), ide_set_xfer_rate() and set_pio_mode().
* Remove no longer needed IDE_HFLAG_NO_SET_MODE host flag checking
from ide_tune_dma().
* Remove superfluous ->set_pio_mode checking from do_special().
This is a part of preparations for adding 'struct ide_port_ops'.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index f04b53c..d868ca4 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -584,11 +584,13 @@
int set_pio_mode(ide_drive_t *drive, int arg)
{
struct request rq;
+ ide_hwif_t *hwif = drive->hwif;
if (arg < 0 || arg > 255)
return -EINVAL;
- if (drive->hwif->set_pio_mode == NULL)
+ if (hwif->set_pio_mode == NULL ||
+ (hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
return -ENOSYS;
if (drive->special.b.set_tune)