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authorBjorn Helgaas <bjorn.helgaas@hp.com>2008-04-29 02:34:20 +0400
committerLen Brown <len.brown@intel.com>2008-04-29 11:22:25 +0400
commit470feb113a23de365b6051efde0d69de86d9d2f8 (patch)
tree046672a3e12f41d0ef2fd8ffbe82650d7f26ee2d /drivers/pnp
parent30c016a0c8d2aae10be6a87bb98f0e85db8b09d5 (diff)
downloadlinux-470feb113a23de365b6051efde0d69de86d9d2f8.tar.xz
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>
Diffstat (limited to 'drivers/pnp')
-rw-r--r--drivers/pnp/interface.c41
1 files changed, 17 insertions, 24 deletions
diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c
index cdc3ecfde6ef..1801df3db1e8 100644
--- a/drivers/pnp/interface.c
+++ b/drivers/pnp/interface.c
@@ -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;