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icside: remove superfluous ->maskproc method

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[inspired by pata_icside]

Enabling/disabling of card IRQs is handled fine by IRQ and IDE
subsystems so there is no need for custom ->maskproc method.

Moreover icside_maskproc() would enable IRQ only if it was already
enabled [because of 'if (state->enabled && !mask)' check].

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-06-07 15:37:06 +02:00
parent 49d8078ad1
commit dff8817b78
1 changed files with 4 additions and 60 deletions
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64
drivers/ide/icside.c
View file

@ -65,8 +65,6 @@ static struct cardinfo icside_cardinfo_v6_2 = {
};
struct icside_state {
unsigned int channel;
unsigned int enabled;
void __iomem *irq_port;
void __iomem *ioc_base;
unsigned int sel;
@ -116,18 +114,11 @@ static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
struct icside_state *state = ec->irq_data;
void __iomem *base = state->irq_port;
state->enabled = 1;
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
readb(base + ICS_ARCIN_V6_INTROFFSET_2);
switch (state->channel) {
case 0:
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
readb(base + ICS_ARCIN_V6_INTROFFSET_2);
break;
case 1:
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
readb(base + ICS_ARCIN_V6_INTROFFSET_1);
break;
}
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
readb(base + ICS_ARCIN_V6_INTROFFSET_1);
}
/* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
@ -137,8 +128,6 @@ static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
{
struct icside_state *state = ec->irq_data;
state->enabled = 0;
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
}
@ -160,44 +149,6 @@ static const expansioncard_ops_t icside_ops_arcin_v6 = {
.irqpending = icside_irqpending_arcin_v6,
};
/*
* Handle routing of interrupts. This is called before
* we write the command to the drive.
*/
static void icside_maskproc(ide_drive_t *drive, int mask)
{
ide_hwif_t *hwif = drive->hwif;
struct expansion_card *ec = ECARD_DEV(hwif->dev);
struct icside_state *state = ecard_get_drvdata(ec);
unsigned long flags;
local_irq_save(flags);
state->channel = hwif->channel;
if (state->enabled && !mask) {
switch (hwif->channel) {
case 0:
writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
break;
case 1:
writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
break;
}
} else {
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
}
local_irq_restore(flags);
}
static const struct ide_port_ops icside_v6_no_dma_port_ops = {
.maskproc = icside_maskproc,
};
#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
/*
* SG-DMA support.
@ -275,7 +226,6 @@ static void icside_set_dma_mode(ide_drive_t *drive, const u8 xfer_mode)
static const struct ide_port_ops icside_v6_port_ops = {
.set_dma_mode = icside_set_dma_mode,
.maskproc = icside_maskproc,
};
static void icside_dma_host_set(ide_drive_t *drive, int on)
@ -319,11 +269,6 @@ static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
*/
BUG_ON(dma_channel_active(ec->dma));
/*
* Ensure that we have the right interrupt routed.
*/
icside_maskproc(drive, 0);
/*
* Route the DMA signals to the correct interface.
*/
@ -452,7 +397,6 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
static const struct ide_port_info icside_v6_port_info __initdata = {
.init_dma = icside_dma_off_init,
.port_ops = &icside_v6_no_dma_port_ops,
.dma_ops = &icside_v6_dma_ops,
.host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
.mwdma_mask = ATA_MWDMA2,