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PNP: reduce redundancy in pnp_set_current_resources() 

Use a temporary "res" pointer to replace repeated lookups in
the pnp resource tables.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-By: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas 2008-04-28 16:34:20 -06:00 committed by Len Brown
parent 30c016a0c8
commit 470feb113a
1 changed files with 17 additions and 24 deletions
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41
drivers/pnp/interface.c
View File

@ -323,6 +323,7 @@ pnp_set_current_resources(struct device *dmdev, struct device_attribute *attr,
const char *ubuf, size_t count)
{
struct pnp_dev *dev = to_pnp_dev(dmdev);
struct resource *res;
char *buf = (void *)ubuf;
int retval = 0;
@ -382,21 +383,18 @@ pnp_set_current_resources(struct device *dmdev, struct device_attribute *attr,
buf += 2;
while (isspace(*buf))
++buf;
dev->res.port_resource[nport].start =
simple_strtoul(buf, &buf, 0);
res = &dev->res.port_resource[nport];
res->start = simple_strtoul(buf, &buf, 0);
while (isspace(*buf))
++buf;
if (*buf == '-') {
buf += 1;
while (isspace(*buf))
++buf;
dev->res.port_resource[nport].end =
simple_strtoul(buf, &buf, 0);
res->end = simple_strtoul(buf, &buf, 0);
} else
dev->res.port_resource[nport].end =
dev->res.port_resource[nport].start;
dev->res.port_resource[nport].flags =
IORESOURCE_IO;
res->end = res->start;
res->flags = IORESOURCE_IO;
nport++;
if (nport >= PNP_MAX_PORT)
break;
@ -406,21 +404,18 @@ pnp_set_current_resources(struct device *dmdev, struct device_attribute *attr,
buf += 3;
while (isspace(*buf))
++buf;
dev->res.mem_resource[nmem].start =
simple_strtoul(buf, &buf, 0);
res = &dev->res.mem_resource[nmem];
res->start = simple_strtoul(buf, &buf, 0);
while (isspace(*buf))
++buf;
if (*buf == '-') {
buf += 1;
while (isspace(*buf))
++buf;
dev->res.mem_resource[nmem].end =
simple_strtoul(buf, &buf, 0);
res->end = simple_strtoul(buf, &buf, 0);
} else
dev->res.mem_resource[nmem].end =
dev->res.mem_resource[nmem].start;
dev->res.mem_resource[nmem].flags =
IORESOURCE_MEM;
res->end = res->start;
res->flags = IORESOURCE_MEM;
nmem++;
if (nmem >= PNP_MAX_MEM)
break;
@ -430,11 +425,10 @@ pnp_set_current_resources(struct device *dmdev, struct device_attribute *attr,
buf += 3;
while (isspace(*buf))
++buf;
dev->res.irq_resource[nirq].start =
dev->res.irq_resource[nirq].end =
res = &dev->res.irq_resource[nirq];
res->start = res->end =
simple_strtoul(buf, &buf, 0);
dev->res.irq_resource[nirq].flags =
IORESOURCE_IRQ;
res->flags = IORESOURCE_IRQ;
nirq++;
if (nirq >= PNP_MAX_IRQ)
break;
@ -444,11 +438,10 @@ pnp_set_current_resources(struct device *dmdev, struct device_attribute *attr,
buf += 3;
while (isspace(*buf))
++buf;
dev->res.dma_resource[ndma].start =
dev->res.dma_resource[ndma].end =
res = &dev->res.dma_resource[ndma];
res->start = res->end =
simple_strtoul(buf, &buf, 0);
dev->res.dma_resource[ndma].flags =
IORESOURCE_DMA;
res->flags = IORESOURCE_DMA;
ndma++;
if (ndma >= PNP_MAX_DMA)
break;