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Subject[PATCH 6/9] 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: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide-io.c | 7 ++++---
include/linux/ide.h | 9 ++-------
2 files changed, 6 insertions(+), 10 deletions(-)
Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -78,8 +78,9 @@ static int __ide_end_request(ide_drive_t
* 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_r
* 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);

/*
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -48,12 +48,6 @@ typedef unsigned char byte; /* used ever
#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))

@@ -504,6 +498,8 @@ 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 {
@@ -533,7 +529,6 @@ 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 */

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