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Commit c3922048 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

ide: DMA_PIO_RETRY -> IDE_DFLAG_DMA_PIO_RETRY 



Add IDE_DFLAG_DMA_PIO_RETRY and use it instead of
ide_drive_t.state + DMA_PIO_RETRY.

There should be no functional changes cause by this patch.

Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 97100fc8

drivers/ide/ide-io.c

+4 −3
Original line number Diff line number Diff line
@@ -78,8 +78,9 @@ static int __ide_end_request(ide_drive_t *drive, struct request *rq, 
	 * decide whether to reenable DMA -- 3 is a random magic for now,

	 * if we DMA timeout more than 3 times, just stay in PIO

	 */

	if (drive->state == DMA_PIO_RETRY && drive->retry_pio <= 3) {

		drive->state = 0;

	if ((drive->dev_flags & IDE_DFLAG_DMA_PIO_RETRY) &&

	    drive->retry_pio <= 3) {

		drive->dev_flags &= ~IDE_DFLAG_DMA_PIO_RETRY;

		ide_dma_on(drive);

	}
@@ -1195,8 +1196,8 @@ static ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) 
	 * a timeout -- we'll reenable after we finish this next request

	 * (or rather the first chunk of it) in pio.

	 */

	drive->dev_flags |= IDE_DFLAG_DMA_PIO_RETRY;

	drive->retry_pio++;

	drive->state = DMA_PIO_RETRY;

	ide_dma_off_quietly(drive);



	/*

include/linux/ide.h

+2 −7
Original line number Diff line number Diff line
@@ -48,12 +48,6 @@ typedef unsigned char byte; /* used everywhere */ 
#define ERROR_RESET	3	/* Reset controller every 4th retry */

#define ERROR_RECAL	1	/* Recalibrate every 2nd retry */



/*

 * state flags

 */



#define DMA_PIO_RETRY	1	/* retrying in PIO */



#define HWIF(drive)		((ide_hwif_t *)((drive)->hwif))

#define HWGROUP(drive)		((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
@@ -506,6 +500,8 @@ enum { 
	IDE_DFLAG_WCACHE		= (1 << 23),

	/* used for ignoring ATA_DF */

	IDE_DFLAG_NOWERR		= (1 << 24),

	/* retrying in PIO */

	IDE_DFLAG_DMA_PIO_RETRY		= (1 << 25),

};



struct ide_drive_s {
@@ -535,7 +531,6 @@ struct ide_drive_s { 
	select_t	select;		/* basic drive/head select reg value */



	u8	retry_pio;		/* retrying dma capable host in pio */

	u8	state;			/* retry state */

	u8	waiting_for_dma;	/* dma currently in progress */



        u8	quirk_list;	/* considered quirky, set for a specific host */