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Commit 784506cb authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

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: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 4764b684

drivers/ide/ide-dma.c

+0 −3
Original line number Diff line number Diff line
@@ -706,9 +706,6 @@ static int ide_tune_dma(ide_drive_t *drive) 
	if (!speed)

		return 0;



	if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)

		return 1;



	if (ide_set_dma_mode(drive, speed))

		return 0;

drivers/ide/ide-io.c

+0 −4
Original line number Diff line number Diff line
@@ -726,10 +726,6 @@ static ide_startstop_t do_special (ide_drive_t *drive) 
		s->b.set_tune = 0;



		if (set_pio_mode_abuse(drive->hwif, req_pio)) {



			if (hwif->set_pio_mode == NULL)

				return ide_stopped;



			/*

			 * take ide_lock for drive->[no_]unmask/[no_]io_32bit

			 */

drivers/ide/ide-lib.c

+10 −2
Original line number Diff line number Diff line
@@ -290,7 +290,8 @@ void ide_set_pio(ide_drive_t *drive, u8 req_pio) 
	ide_hwif_t *hwif = drive->hwif;

	u8 host_pio, pio;



	if (hwif->set_pio_mode == NULL)

	if (hwif->set_pio_mode == NULL ||

	    (hwif->host_flags & IDE_HFLAG_NO_SET_MODE))

		return;



	BUG_ON(hwif->pio_mask == 0x00);
@@ -343,6 +344,9 @@ int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) 
{

	ide_hwif_t *hwif = drive->hwif;



	if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)

		return 0;



	if (hwif->set_pio_mode == NULL)

		return -1;
@@ -370,6 +374,9 @@ int ide_set_dma_mode(ide_drive_t *drive, const u8 mode) 
{

	ide_hwif_t *hwif = drive->hwif;



	if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)

		return 0;



	if (hwif->set_dma_mode == NULL)

		return -1;
@@ -400,7 +407,8 @@ int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) 
{

	ide_hwif_t *hwif = drive->hwif;



	if (hwif->set_dma_mode == NULL)

	if (hwif->set_dma_mode == NULL ||

	    (hwif->host_flags & IDE_HFLAG_NO_SET_MODE))

		return -1;



	rate = ide_rate_filter(drive, rate);

drivers/ide/ide.c

+3 −1
Original line number Diff line number Diff line
@@ -584,11 +584,13 @@ out: 
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)