[patch 33/55] PNP: reduce redundancy in pnp_set_current_resources()

Bjorn Helgaas
2008-04-28T22:37:03Z

[-- Attachment #1: pnp-simplify-proc-functions --]
[-- Type: text/plain, Size: 3039 bytes --]

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>

Index: work10/drivers/pnp/interface.c
===================================================================
--- work10.orig/drivers/pnp/interface.c 2008-04-28 16:09:22.000000000 -0600
+++ work10/drivers/pnp/interface.c 2008-04-28 16:09:33.000000000 -0600
@@ -323,6 +323,7 @@
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 @@
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 @@
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 @@
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 @@
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;

--