[PATCH 01/10] ide: add ->dma_clear method and remove ->dma_timeout one

From: Bartlomiej Zolnierkiewicz
Date: Fri Feb 20 2009 - 12:10:29 EST

From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Subject: [PATCH] ide: add ->dma_clear method and remove ->dma_timeout one

All custom ->dma_timeout implementations call the generic one thus it is
possible to have only an optional method for resetting DMA engine instead:

* Add ->dma_clear method and convert hpt366, pdc202xx_old and sl82c105
host drivers to use it.

* Always use ide_dma_timeout() in ide_dma_timeout_retry() and remove
->dma_timeout method.

* Make ide_dma_timeout() static.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/alim15x3.c | 1 -
drivers/ide/au1xxx-ide.c | 1 -
drivers/ide/cmd64x.c | 3 ---
drivers/ide/cs5536.c | 1 -
drivers/ide/hpt366.c | 10 +---------
drivers/ide/icside.c | 1 -
drivers/ide/ide-dma-sff.c | 3 +--
drivers/ide/ide-dma.c | 10 ++++++----
drivers/ide/it821x.c | 3 +--
drivers/ide/ns87415.c | 1 -
drivers/ide/pdc202xx_old.c | 10 ++--------
drivers/ide/pmac.c | 1 -
drivers/ide/sc1200.c | 1 -
drivers/ide/scc_pata.c | 1 -
drivers/ide/sgiioc4.c | 1 -
drivers/ide/siimage.c | 1 -
drivers/ide/sl82c105.c | 7 +++----
drivers/ide/tc86c001.c | 1 -
drivers/ide/trm290.c | 1 -
drivers/ide/tx4939ide.c | 1 -
include/linux/ide.h | 4 ++--
21 files changed, 16 insertions(+), 47 deletions(-)

Index: b/drivers/ide/alim15x3.c
===================================================================
--- a/drivers/ide/alim15x3.c
+++ b/drivers/ide/alim15x3.c
@@ -509,7 +509,6 @@ static const struct ide_dma_ops ali_dma_
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/au1xxx-ide.c
===================================================================
--- a/drivers/ide/au1xxx-ide.c
+++ b/drivers/ide/au1xxx-ide.c
@@ -353,7 +353,6 @@ static const struct ide_dma_ops au1xxx_d
.dma_end = auide_dma_end,
.dma_test_irq = auide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
- .dma_timeout = ide_dma_timeout,
};

static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Index: b/drivers/ide/cmd64x.c
===================================================================
--- a/drivers/ide/cmd64x.c
+++ b/drivers/ide/cmd64x.c
@@ -384,7 +384,6 @@ static const struct ide_dma_ops cmd64x_d
.dma_test_irq = cmd64x_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

@@ -396,7 +395,6 @@ static const struct ide_dma_ops cmd646_r
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

@@ -408,7 +406,6 @@ static const struct ide_dma_ops cmd648_d
.dma_test_irq = cmd648_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/cs5536.c
===================================================================
--- a/drivers/ide/cs5536.c
+++ b/drivers/ide/cs5536.c
@@ -236,7 +236,6 @@ static const struct ide_dma_ops cs5536_d
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
};

static const struct ide_port_info cs5536_info = {
Index: b/drivers/ide/hpt366.c
===================================================================
--- a/drivers/ide/hpt366.c
+++ b/drivers/ide/hpt366.c
@@ -835,12 +835,6 @@ static int hpt370_dma_end(ide_drive_t *d
return ide_dma_end(drive);
}

-static void hpt370_dma_timeout(ide_drive_t *drive)
-{
- hpt370_irq_timeout(drive);
- ide_dma_timeout(drive);
-}
-
/* returns 1 if DMA IRQ issued, 0 otherwise */
static int hpt374_dma_test_irq(ide_drive_t *drive)
{
@@ -1423,7 +1417,6 @@ static const struct ide_dma_ops hpt37x_d
.dma_test_irq = hpt374_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

@@ -1435,7 +1428,7 @@ static const struct ide_dma_ops hpt370_d
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = hpt370_dma_timeout,
+ .dma_clear = hpt370_irq_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

@@ -1447,7 +1440,6 @@ static const struct ide_dma_ops hpt36x_d
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = hpt366_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/icside.c
===================================================================
--- a/drivers/ide/icside.c
+++ b/drivers/ide/icside.c
@@ -377,7 +377,6 @@ static const struct ide_dma_ops icside_v
.dma_start = icside_dma_start,
.dma_end = icside_dma_end,
.dma_test_irq = icside_dma_test_irq,
- .dma_timeout = ide_dma_timeout,
.dma_lost_irq = ide_dma_lost_irq,
};
#else
Index: b/drivers/ide/ide-dma-sff.c
===================================================================
--- a/drivers/ide/ide-dma-sff.c
+++ b/drivers/ide/ide-dma-sff.c
@@ -338,9 +338,8 @@ const struct ide_dma_ops sff_dma_ops = {
.dma_start = ide_dma_start,
.dma_end = ide_dma_end,
.dma_test_irq = ide_dma_test_irq,
- .dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_lost_irq = ide_dma_lost_irq,
+ .dma_timer_expiry = ide_dma_sff_timer_expiry,
.dma_sff_read_status = ide_dma_sff_read_status,
};
EXPORT_SYMBOL_GPL(sff_dma_ops);
Index: b/drivers/ide/ide-dma.c
===================================================================
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -456,7 +456,7 @@ void ide_dma_lost_irq(ide_drive_t *drive
}
EXPORT_SYMBOL_GPL(ide_dma_lost_irq);

-void ide_dma_timeout(ide_drive_t *drive)
+static void ide_dma_timeout(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;

@@ -469,7 +469,6 @@ void ide_dma_timeout(ide_drive_t *drive)

hwif->dma_ops->dma_end(drive);
}
-EXPORT_SYMBOL_GPL(ide_dma_timeout);

/*
* un-busy the port etc, and clear any pending DMA status. we want to
@@ -479,6 +478,7 @@ EXPORT_SYMBOL_GPL(ide_dma_timeout);
ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error)
{
ide_hwif_t *hwif = drive->hwif;
+ const struct ide_dma_ops *dma_ops = hwif->dma_ops;
struct request *rq;
ide_startstop_t ret = ide_stopped;

@@ -488,12 +488,14 @@ ide_startstop_t ide_dma_timeout_retry(id

if (error < 0) {
printk(KERN_WARNING "%s: DMA timeout error\n", drive->name);
- (void)hwif->dma_ops->dma_end(drive);
+ (void)dma_ops->dma_end(drive);
ret = ide_error(drive, "dma timeout error",
hwif->tp_ops->read_status(hwif));
} else {
printk(KERN_WARNING "%s: DMA timeout retry\n", drive->name);
- hwif->dma_ops->dma_timeout(drive);
+ if (dma_ops->dma_clear)
+ dma_ops->dma_clear(drive);
+ ide_dma_timeout(drive);
}

/*
Index: b/drivers/ide/it821x.c
===================================================================
--- a/drivers/ide/it821x.c
+++ b/drivers/ide/it821x.c
@@ -512,9 +512,8 @@ static struct ide_dma_ops it821x_pass_th
.dma_start = it821x_dma_start,
.dma_end = it821x_dma_end,
.dma_test_irq = ide_dma_test_irq,
- .dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_lost_irq = ide_dma_lost_irq,
+ .dma_timer_expiry = ide_dma_sff_timer_expiry,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/ns87415.c
===================================================================
--- a/drivers/ide/ns87415.c
+++ b/drivers/ide/ns87415.c
@@ -306,7 +306,6 @@ static const struct ide_dma_ops ns87415_
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = superio_dma_sff_read_status,
};

Index: b/drivers/ide/pdc202xx_old.c
===================================================================
--- a/drivers/ide/pdc202xx_old.c
+++ b/drivers/ide/pdc202xx_old.c
@@ -258,12 +258,6 @@ static void pdc202xx_dma_lost_irq(ide_dr
ide_dma_lost_irq(drive);
}

-static void pdc202xx_dma_timeout(ide_drive_t *drive)
-{
- pdc202xx_reset(drive);
- ide_dma_timeout(drive);
-}
-
static int init_chipset_pdc202xx(struct pci_dev *dev)
{
unsigned long dmabase = pci_resource_start(dev, 4);
@@ -336,7 +330,7 @@ static const struct ide_dma_ops pdc20246
.dma_test_irq = pdc202xx_dma_test_irq,
.dma_lost_irq = pdc202xx_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = pdc202xx_dma_timeout,
+ .dma_clear = pdc202xx_reset,
.dma_sff_read_status = ide_dma_sff_read_status,
};

@@ -348,7 +342,7 @@ static const struct ide_dma_ops pdc2026x
.dma_test_irq = pdc202xx_dma_test_irq,
.dma_lost_irq = pdc202xx_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = pdc202xx_dma_timeout,
+ .dma_clear = pdc202xx_reset,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/pmac.c
===================================================================
--- a/drivers/ide/pmac.c
+++ b/drivers/ide/pmac.c
@@ -1650,7 +1650,6 @@ static const struct ide_dma_ops pmac_dma
.dma_start = pmac_ide_dma_start,
.dma_end = pmac_ide_dma_end,
.dma_test_irq = pmac_ide_dma_test_irq,
- .dma_timeout = ide_dma_timeout,
.dma_lost_irq = pmac_ide_dma_lost_irq,
};

Index: b/drivers/ide/sc1200.c
===================================================================
--- a/drivers/ide/sc1200.c
+++ b/drivers/ide/sc1200.c
@@ -291,7 +291,6 @@ static const struct ide_dma_ops sc1200_d
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/scc_pata.c
===================================================================
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -872,7 +872,6 @@ static const struct ide_dma_ops scc_dma_
.dma_end = scc_dma_end,
.dma_test_irq = scc_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
- .dma_timeout = ide_dma_timeout,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
.dma_sff_read_status = scc_dma_sff_read_status,
};
Index: b/drivers/ide/sgiioc4.c
===================================================================
--- a/drivers/ide/sgiioc4.c
+++ b/drivers/ide/sgiioc4.c
@@ -533,7 +533,6 @@ static const struct ide_dma_ops sgiioc4_
.dma_end = sgiioc4_dma_end,
.dma_test_irq = sgiioc4_dma_test_irq,
.dma_lost_irq = sgiioc4_dma_lost_irq,
- .dma_timeout = ide_dma_timeout,
};

static const struct ide_port_info sgiioc4_port_info __devinitconst = {
Index: b/drivers/ide/siimage.c
===================================================================
--- a/drivers/ide/siimage.c
+++ b/drivers/ide/siimage.c
@@ -715,7 +715,6 @@ static const struct ide_dma_ops sil_dma_
.dma_end = ide_dma_end,
.dma_test_irq = siimage_dma_test_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_lost_irq = ide_dma_lost_irq,
.dma_sff_read_status = ide_dma_sff_read_status,
};
Index: b/drivers/ide/sl82c105.c
===================================================================
--- a/drivers/ide/sl82c105.c
+++ b/drivers/ide/sl82c105.c
@@ -189,14 +189,13 @@ static void sl82c105_dma_start(ide_drive
ide_dma_start(drive);
}

-static void sl82c105_dma_timeout(ide_drive_t *drive)
+static void sl82c105_dma_clear(ide_drive_t *drive)
{
struct pci_dev *dev = to_pci_dev(drive->hwif->dev);

- DBG(("sl82c105_dma_timeout(drive:%s)\n", drive->name));
+ DBG(("sl82c105_dma_clear(drive:%s)\n", drive->name));

sl82c105_reset_host(dev);
- ide_dma_timeout(drive);
}

static int sl82c105_dma_end(ide_drive_t *drive)
@@ -298,7 +297,7 @@ static const struct ide_dma_ops sl82c105
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = sl82c105_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = sl82c105_dma_timeout,
+ .dma_clear = sl82c105_dma_clear,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/tc86c001.c
===================================================================
--- a/drivers/ide/tc86c001.c
+++ b/drivers/ide/tc86c001.c
@@ -187,7 +187,6 @@ static const struct ide_dma_ops tc86c001
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = ide_dma_sff_read_status,
};

Index: b/drivers/ide/trm290.c
===================================================================
--- a/drivers/ide/trm290.c
+++ b/drivers/ide/trm290.c
@@ -314,7 +314,6 @@ static struct ide_dma_ops trm290_dma_ops
.dma_end = trm290_dma_end,
.dma_test_irq = trm290_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
- .dma_timeout = ide_dma_timeout,
};

static const struct ide_port_info trm290_chipset __devinitdata = {
Index: b/drivers/ide/tx4939ide.c
===================================================================
--- a/drivers/ide/tx4939ide.c
+++ b/drivers/ide/tx4939ide.c
@@ -632,7 +632,6 @@ static const struct ide_dma_ops tx4939id
.dma_test_irq = tx4939ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_timeout = ide_dma_timeout,
.dma_sff_read_status = tx4939ide_dma_sff_read_status,
};

Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -715,8 +715,9 @@ struct ide_dma_ops {
int (*dma_end)(struct ide_drive_s *);
int (*dma_test_irq)(struct ide_drive_s *);
void (*dma_lost_irq)(struct ide_drive_s *);
+ /* below ones are optional */
int (*dma_timer_expiry)(struct ide_drive_s *);
- void (*dma_timeout)(struct ide_drive_s *);
+ void (*dma_clear)(struct ide_drive_s *);
/*
* The following method is optional and only required to be
* implemented for the SFF-8038i compatible controllers.
@@ -1458,7 +1459,6 @@ static inline int config_drive_for_dma(i
#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */

void ide_dma_lost_irq(ide_drive_t *);
-void ide_dma_timeout(ide_drive_t *);
ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);

#else
--
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