[patch 13/54] PNPACPI: use temporaries to reduce repetition

From: Bjorn Helgaas
Date: Fri Apr 25 2008 - 14:45:20 EST

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No functional change, just fewer words and fewer chances for
transcription errors.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Acked-By: Rene Herman <rene.herman@xxxxxxxxx>

Index: work10/drivers/pnp/pnpacpi/rsparser.c
===================================================================
--- work10.orig/drivers/pnp/pnpacpi/rsparser.c 2008-04-25 11:14:52.000000000 -0600
+++ work10/drivers/pnp/pnpacpi/rsparser.c 2008-04-25 11:14:53.000000000 -0600
@@ -280,6 +280,14 @@
void *data)
{
struct pnp_resource_table *res_table = data;
+ struct acpi_resource_irq *irq;
+ struct acpi_resource_dma *dma;
+ struct acpi_resource_io *io;
+ struct acpi_resource_fixed_io *fixed_io;
+ struct acpi_resource_memory24 *memory24;
+ struct acpi_resource_memory32 *memory32;
+ struct acpi_resource_fixed_memory32 *fixed_memory32;
+ struct acpi_resource_extended_irq *extended_irq;
int i;

switch (res->type) {
@@ -288,29 +296,32 @@
* Per spec, only one interrupt per descriptor is allowed in
* _CRS, but some firmware violates this, so parse them all.
*/
- for (i = 0; i < res->data.irq.interrupt_count; i++) {
+ irq = &res->data.irq;
+ for (i = 0; i < irq->interrupt_count; i++) {
pnpacpi_parse_allocated_irqresource(res_table,
- res->data.irq.interrupts[i],
- res->data.irq.triggering,
- res->data.irq.polarity,
- res->data.irq.sharable);
+ irq->interrupts[i],
+ irq->triggering,
+ irq->polarity,
+ irq->sharable);
}
break;

case ACPI_RESOURCE_TYPE_DMA:
- if (res->data.dma.channel_count > 0)
+ dma = &res->data.dma;
+ if (dma->channel_count > 0)
pnpacpi_parse_allocated_dmaresource(res_table,
- res->data.dma.channels[0],
- res->data.dma.type,
- res->data.dma.bus_master,
- res->data.dma.transfer);
+ dma->channels[0],
+ dma->type,
+ dma->bus_master,
+ dma->transfer);
break;

case ACPI_RESOURCE_TYPE_IO:
+ io = &res->data.io;
pnpacpi_parse_allocated_ioresource(res_table,
- res->data.io.minimum,
- res->data.io.address_length,
- res->data.io.io_decode);
+ io->minimum,
+ io->address_length,
+ io->io_decode);
break;

case ACPI_RESOURCE_TYPE_START_DEPENDENT:
@@ -318,9 +329,10 @@
break;

case ACPI_RESOURCE_TYPE_FIXED_IO:
+ fixed_io = &res->data.fixed_io;
pnpacpi_parse_allocated_ioresource(res_table,
- res->data.fixed_io.address,
- res->data.fixed_io.address_length,
+ fixed_io->address,
+ fixed_io->address_length,
ACPI_DECODE_10);
break;

@@ -331,22 +343,25 @@
break;

case ACPI_RESOURCE_TYPE_MEMORY24:
+ memory24 = &res->data.memory24;
pnpacpi_parse_allocated_memresource(res_table,
- res->data.memory24.minimum,
- res->data.memory24.address_length,
- res->data.memory24.write_protect);
+ memory24->minimum,
+ memory24->address_length,
+ memory24->write_protect);
break;
case ACPI_RESOURCE_TYPE_MEMORY32:
+ memory32 = &res->data.memory32;
pnpacpi_parse_allocated_memresource(res_table,
- res->data.memory32.minimum,
- res->data.memory32.address_length,
- res->data.memory32.write_protect);
+ memory32->minimum,
+ memory32->address_length,
+ memory32->write_protect);
break;
case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
+ fixed_memory32 = &res->data.fixed_memory32;
pnpacpi_parse_allocated_memresource(res_table,
- res->data.fixed_memory32.address,
- res->data.fixed_memory32.address_length,
- res->data.fixed_memory32.write_protect);
+ fixed_memory32->address,
+ fixed_memory32->address_length,
+ fixed_memory32->write_protect);
break;
case ACPI_RESOURCE_TYPE_ADDRESS16:
case ACPI_RESOURCE_TYPE_ADDRESS32:
@@ -360,15 +375,16 @@
break;

case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
- if (res->data.extended_irq.producer_consumer == ACPI_PRODUCER)
+ extended_irq = &res->data.extended_irq;
+ if (extended_irq->producer_consumer == ACPI_PRODUCER)
return AE_OK;

- for (i = 0; i < res->data.extended_irq.interrupt_count; i++) {
+ for (i = 0; i < extended_irq->interrupt_count; i++) {
pnpacpi_parse_allocated_irqresource(res_table,
- res->data.extended_irq.interrupts[i],
- res->data.extended_irq.triggering,
- res->data.extended_irq.polarity,
- res->data.extended_irq.sharable);
+ extended_irq->interrupts[i],
+ extended_irq->triggering,
+ extended_irq->polarity,
+ extended_irq->sharable);
}
break;

@@ -797,122 +813,136 @@
static void pnpacpi_encode_irq(struct acpi_resource *resource,
struct resource *p)
{
+ struct acpi_resource_irq *irq = &resource->data.irq;
int triggering, polarity;

decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
- resource->data.irq.triggering = triggering;
- resource->data.irq.polarity = polarity;
+ irq->triggering = triggering;
+ irq->polarity = polarity;
if (triggering == ACPI_EDGE_SENSITIVE)
- resource->data.irq.sharable = ACPI_EXCLUSIVE;
+ irq->sharable = ACPI_EXCLUSIVE;
else
- resource->data.irq.sharable = ACPI_SHARED;
- resource->data.irq.interrupt_count = 1;
- resource->data.irq.interrupts[0] = p->start;
+ irq->sharable = ACPI_SHARED;
+ irq->interrupt_count = 1;
+ irq->interrupts[0] = p->start;
}

static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
struct resource *p)
{
+ struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
int triggering, polarity;

decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
- resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
- resource->data.extended_irq.triggering = triggering;
- resource->data.extended_irq.polarity = polarity;
+ extended_irq->producer_consumer = ACPI_CONSUMER;
+ extended_irq->triggering = triggering;
+ extended_irq->polarity = polarity;
if (triggering == ACPI_EDGE_SENSITIVE)
- resource->data.extended_irq.sharable = ACPI_EXCLUSIVE;
+ extended_irq->sharable = ACPI_EXCLUSIVE;
else
- resource->data.extended_irq.sharable = ACPI_SHARED;
- resource->data.extended_irq.interrupt_count = 1;
- resource->data.extended_irq.interrupts[0] = p->start;
+ extended_irq->sharable = ACPI_SHARED;
+ extended_irq->interrupt_count = 1;
+ extended_irq->interrupts[0] = p->start;
}

static void pnpacpi_encode_dma(struct acpi_resource *resource,
struct resource *p)
{
+ struct acpi_resource_dma *dma = &resource->data.dma;
+
/* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
case IORESOURCE_DMA_TYPEA:
- resource->data.dma.type = ACPI_TYPE_A;
+ dma->type = ACPI_TYPE_A;
break;
case IORESOURCE_DMA_TYPEB:
- resource->data.dma.type = ACPI_TYPE_B;
+ dma->type = ACPI_TYPE_B;
break;
case IORESOURCE_DMA_TYPEF:
- resource->data.dma.type = ACPI_TYPE_F;
+ dma->type = ACPI_TYPE_F;
break;
default:
- resource->data.dma.type = ACPI_COMPATIBILITY;
+ dma->type = ACPI_COMPATIBILITY;
}

switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
case IORESOURCE_DMA_8BIT:
- resource->data.dma.transfer = ACPI_TRANSFER_8;
+ dma->transfer = ACPI_TRANSFER_8;
break;
case IORESOURCE_DMA_8AND16BIT:
- resource->data.dma.transfer = ACPI_TRANSFER_8_16;
+ dma->transfer = ACPI_TRANSFER_8_16;
break;
default:
- resource->data.dma.transfer = ACPI_TRANSFER_16;
+ dma->transfer = ACPI_TRANSFER_16;
}

- resource->data.dma.bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
- resource->data.dma.channel_count = 1;
- resource->data.dma.channels[0] = p->start;
+ dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
+ dma->channel_count = 1;
+ dma->channels[0] = p->start;
}

static void pnpacpi_encode_io(struct acpi_resource *resource,
struct resource *p)
{
+ struct acpi_resource_io *io = &resource->data.io;
+
/* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
- resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
+ io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
ACPI_DECODE_16 : ACPI_DECODE_10;
- resource->data.io.minimum = p->start;
- resource->data.io.maximum = p->end;
- resource->data.io.alignment = 0; /* Correct? */
- resource->data.io.address_length = p->end - p->start + 1;
+ io->minimum = p->start;
+ io->maximum = p->end;
+ io->alignment = 0; /* Correct? */
+ io->address_length = p->end - p->start + 1;
}

static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
struct resource *p)
{
- resource->data.fixed_io.address = p->start;
- resource->data.fixed_io.address_length = p->end - p->start + 1;
+ struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
+
+ fixed_io->address = p->start;
+ fixed_io->address_length = p->end - p->start + 1;
}

static void pnpacpi_encode_mem24(struct acpi_resource *resource,
struct resource *p)
{
+ struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
+
/* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
- resource->data.memory24.write_protect =
+ memory24->write_protect =
(p->flags & IORESOURCE_MEM_WRITEABLE) ?
ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
- resource->data.memory24.minimum = p->start;
- resource->data.memory24.maximum = p->end;
- resource->data.memory24.alignment = 0;
- resource->data.memory24.address_length = p->end - p->start + 1;
+ memory24->minimum = p->start;
+ memory24->maximum = p->end;
+ memory24->alignment = 0;
+ memory24->address_length = p->end - p->start + 1;
}

static void pnpacpi_encode_mem32(struct acpi_resource *resource,
struct resource *p)
{
- resource->data.memory32.write_protect =
+ struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
+
+ memory32->write_protect =
(p->flags & IORESOURCE_MEM_WRITEABLE) ?
ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
- resource->data.memory32.minimum = p->start;
- resource->data.memory32.maximum = p->end;
- resource->data.memory32.alignment = 0;
- resource->data.memory32.address_length = p->end - p->start + 1;
+ memory32->minimum = p->start;
+ memory32->maximum = p->end;
+ memory32->alignment = 0;
+ memory32->address_length = p->end - p->start + 1;
}

static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
struct resource *p)
{
- resource->data.fixed_memory32.write_protect =
+ struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
+
+ fixed_memory32->write_protect =
(p->flags & IORESOURCE_MEM_WRITEABLE) ?
ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
- resource->data.fixed_memory32.address = p->start;
- resource->data.fixed_memory32.address_length = p->end - p->start + 1;
+ fixed_memory32->address = p->start;
+ fixed_memory32->address_length = p->end - p->start + 1;
}

int pnpacpi_encode_resources(struct pnp_resource_table *res_table,

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Next message: Bjorn Helgaas: "[patch 16/54] PNPACPI: pass pnp_dev instead of acpi_handle"
Previous message: Bjorn Helgaas: "[patch 10/54] ISAPNP: pull pnp_add_card_id() out of isapnp_parse_card_id()"
In reply to: Bjorn Helgaas: "[patch 10/54] ISAPNP: pull pnp_add_card_id() out of isapnp_parse_card_id()"
Next in thread: Bjorn Helgaas: "[patch 16/54] PNPACPI: pass pnp_dev instead of acpi_handle"
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