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Subject[PATCH 08/10] ide: move ide_map_sg() call out from ->dma_setup method
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: move ide_map_sg() call out from ->dma_setup method

Move ide_map_sg() call from ->dma_setup implementations
and ide_destroy_dmatable() one from *_build_dmatable() to
ide_dma_prepare().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/au1xxx-ide.c | 8 ++------
drivers/ide/ide-dma-sff.c | 2 --
drivers/ide/ide-dma.c | 8 ++++++--
drivers/ide/pmac.c | 6 +-----
drivers/ide/scc_pata.c | 4 +---
drivers/ide/sgiioc4.c | 6 +-----
drivers/ide/trm290.c | 5 ++---
drivers/ide/tx4939ide.c | 6 +-----
8 files changed, 14 insertions(+), 31 deletions(-)
Index: b/drivers/ide/au1xxx-ide.c
===================================================================
--- a/drivers/ide/au1xxx-ide.c
+++ b/drivers/ide/au1xxx-ide.c
@@ -272,9 +272,7 @@ static int auide_build_dmatable(ide_driv
if (count)
return 1;

- use_pio_instead:
- ide_destroy_dmatable(drive);
-
+use_pio_instead:
return 0; /* revert to PIO for this request */
}

@@ -290,10 +288,8 @@ static void auide_dma_start(ide_drive_t

static int auide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
{
- if (auide_build_dmatable(drive, cmd) == 0) {
- ide_map_sg(drive, cmd);
+ if (auide_build_dmatable(drive, cmd) == 0)
return 1;
- }

drive->waiting_for_dma = 1;
return 0;
Index: b/drivers/ide/ide-dma-sff.c
===================================================================
--- a/drivers/ide/ide-dma-sff.c
+++ b/drivers/ide/ide-dma-sff.c
@@ -166,8 +166,6 @@ use_pio_instead:
printk(KERN_ERR "%s: %s\n", drive->name,
count ? "DMA table too small" : "empty DMA table?");

- ide_destroy_dmatable(drive);
-
return 0; /* revert to PIO for this request */
}
EXPORT_SYMBOL_GPL(ide_build_dmatable);
Index: b/drivers/ide/ide-dma.c
===================================================================
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -566,8 +566,12 @@ int ide_dma_prepare(ide_drive_t *drive,

if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
(dma_ops->dma_check && dma_ops->dma_check(drive, cmd)) ||
- ide_build_sglist(drive, cmd) == 0 ||
- dma_ops->dma_setup(drive, cmd))
+ ide_build_sglist(drive, cmd) == 0)
return 1;
+ if (dma_ops->dma_setup(drive, cmd)) {
+ ide_destroy_dmatable(drive);
+ ide_map_sg(drive, cmd);
+ return 1;
+ }
return 0;
}
Index: b/drivers/ide/pmac.c
===================================================================
--- a/drivers/ide/pmac.c
+++ b/drivers/ide/pmac.c
@@ -1493,8 +1493,6 @@ static int pmac_ide_build_dmatable(ide_d
printk(KERN_DEBUG "%s: empty DMA table?\n", drive->name);

use_pio_instead:
- ide_destroy_dmatable(drive);
-
return 0; /* revert to PIO for this request */
}

@@ -1510,10 +1508,8 @@ static int pmac_ide_dma_setup(ide_drive_
u8 unit = drive->dn & 1, ata4 = (pmif->kind == controller_kl_ata4);
u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);

- if (pmac_ide_build_dmatable(drive, cmd) == 0) {
- ide_map_sg(drive, cmd);
+ if (pmac_ide_build_dmatable(drive, cmd) == 0)
return 1;
- }

/* Apple adds 60ns to wrDataSetup on reads */
if (ata4 && (pmif->timings[unit] & TR_66_UDMA_EN)) {
Index: b/drivers/ide/scc_pata.c
===================================================================
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -321,10 +321,8 @@ static int scc_dma_setup(ide_drive_t *dr
u8 dma_stat;

/* fall back to pio! */
- if (ide_build_dmatable(drive, cmd) == 0) {
- ide_map_sg(drive, cmd);
+ if (ide_build_dmatable(drive, cmd) == 0)
return 1;
- }

/* PRD table */
out_be32((void __iomem *)(hwif->dma_base + 8), hwif->dmatable_dma);
Index: b/drivers/ide/sgiioc4.c
===================================================================
--- a/drivers/ide/sgiioc4.c
+++ b/drivers/ide/sgiioc4.c
@@ -478,8 +478,6 @@ static int sgiioc4_build_dmatable(ide_dr
}

use_pio_instead:
- ide_destroy_dmatable(drive);
-
return 0; /* revert to PIO for this request */
}

@@ -488,11 +486,9 @@ static int sgiioc4_dma_setup(ide_drive_t
int ddir;
u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);

- if (sgiioc4_build_dmatable(drive, cmd) == 0) {
+ if (sgiioc4_build_dmatable(drive, cmd) == 0)
/* try PIO instead of DMA */
- ide_map_sg(drive, cmd);
return 1;
- }

if (write)
/* Writes TO the IOC4 FROM Main Memory */
Index: b/drivers/ide/trm290.c
===================================================================
--- a/drivers/ide/trm290.c
+++ b/drivers/ide/trm290.c
@@ -193,11 +193,10 @@ static int trm290_dma_setup(ide_drive_t
unsigned int count, rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 2;

count = ide_build_dmatable(drive, cmd);
- if (count == 0) {
- ide_map_sg(drive, cmd);
+ if (count == 0)
/* try PIO instead of DMA */
return 1;
- }
+
outl(hwif->dmatable_dma | rw, hwif->dma_base);
drive->waiting_for_dma = 1;
/* start DMA */
Index: b/drivers/ide/tx4939ide.c
===================================================================
--- a/drivers/ide/tx4939ide.c
+++ b/drivers/ide/tx4939ide.c
@@ -279,8 +279,6 @@ use_pio_instead:
printk(KERN_ERR "%s: %s\n", drive->name,
count ? "DMA table too small" : "empty DMA table?");

- ide_destroy_dmatable(drive);
-
return 0; /* revert to PIO for this request */
}
#else
@@ -294,10 +292,8 @@ static int tx4939ide_dma_setup(ide_drive
u8 rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 0 : ATA_DMA_WR;

/* fall back to PIO! */
- if (tx4939ide_build_dmatable(drive, cmd) == 0) {
- ide_map_sg(drive, cmd);
+ if (tx4939ide_build_dmatable(drive, cmd) == 0)
return 1;
- }

/* PRD table */
tx4939ide_writel(hwif->dmatable_dma, base, TX4939IDE_PRD_Ptr);

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