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path: root/drivers/pnp/resource.c
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Diffstat (limited to 'drivers/pnp/resource.c')
-rw-r--r--drivers/pnp/resource.c102
1 files changed, 48 insertions, 54 deletions
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index a685fbec460..ea6ec14a055 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -3,7 +3,6 @@
*
* based on isapnp.c resource management (c) Jaroslav Kysela <perex@suse.cz>
* Copyright 2003 Adam Belay <ambx1@neo.rr.com>
- *
*/
#include <linux/module.h>
@@ -20,21 +19,19 @@
#include <linux/pnp.h>
#include "base.h"
-static int pnp_reserve_irq[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some IRQ */
-static int pnp_reserve_dma[8] = { [0 ... 7] = -1 }; /* reserve (don't use) some DMA */
-static int pnp_reserve_io[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some I/O region */
-static int pnp_reserve_mem[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some memory region */
-
+static int pnp_reserve_irq[16] = {[0 ... 15] = -1 }; /* reserve (don't use) some IRQ */
+static int pnp_reserve_dma[8] = {[0 ... 7] = -1 }; /* reserve (don't use) some DMA */
+static int pnp_reserve_io[16] = {[0 ... 15] = -1 }; /* reserve (don't use) some I/O region */
+static int pnp_reserve_mem[16] = {[0 ... 15] = -1 }; /* reserve (don't use) some memory region */
/*
* option registration
*/
-static struct pnp_option * pnp_build_option(int priority)
+static struct pnp_option *pnp_build_option(int priority)
{
struct pnp_option *option = pnp_alloc(sizeof(struct pnp_option));
- /* check if pnp_alloc ran out of memory */
if (!option)
return NULL;
@@ -46,9 +43,10 @@ static struct pnp_option * pnp_build_option(int priority)
return option;
}
-struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev)
+struct pnp_option *pnp_register_independent_option(struct pnp_dev *dev)
{
struct pnp_option *option;
+
if (!dev)
return NULL;
@@ -61,9 +59,11 @@ struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev)
return option;
}
-struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority)
+struct pnp_option *pnp_register_dependent_option(struct pnp_dev *dev,
+ int priority)
{
struct pnp_option *option;
+
if (!dev)
return NULL;
@@ -82,6 +82,7 @@ struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int prior
int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data)
{
struct pnp_irq *ptr;
+
if (!option)
return -EINVAL;
if (!data)
@@ -110,6 +111,7 @@ int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data)
int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data)
{
struct pnp_dma *ptr;
+
if (!option)
return -EINVAL;
if (!data)
@@ -129,6 +131,7 @@ int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data)
int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data)
{
struct pnp_port *ptr;
+
if (!option)
return -EINVAL;
if (!data)
@@ -148,6 +151,7 @@ int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data)
int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data)
{
struct pnp_mem *ptr;
+
if (!option)
return -EINVAL;
if (!data)
@@ -222,7 +226,6 @@ void pnp_free_option(struct pnp_option *option)
}
}
-
/*
* resource validity checking
*/
@@ -236,11 +239,12 @@ void pnp_free_option(struct pnp_option *option)
#define cannot_compare(flags) \
((flags) & (IORESOURCE_UNSET | IORESOURCE_DISABLED))
-int pnp_check_port(struct pnp_dev * dev, int idx)
+int pnp_check_port(struct pnp_dev *dev, int idx)
{
int tmp;
struct pnp_dev *tdev;
resource_size_t *port, *end, *tport, *tend;
+
port = &dev->res.port_resource[idx].start;
end = &dev->res.port_resource[idx].end;
@@ -250,8 +254,8 @@ int pnp_check_port(struct pnp_dev * dev, int idx)
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
- if(!dev->active) {
- if (__check_region(&ioport_resource, *port, length(port,end)))
+ if (!dev->active) {
+ if (__check_region(&ioport_resource, *port, length(port, end)))
return 0;
}
@@ -259,7 +263,7 @@ int pnp_check_port(struct pnp_dev * dev, int idx)
for (tmp = 0; tmp < 8; tmp++) {
int rport = pnp_reserve_io[tmp << 1];
int rend = pnp_reserve_io[(tmp << 1) + 1] + rport - 1;
- if (ranged_conflict(port,end,&rport,&rend))
+ if (ranged_conflict(port, end, &rport, &rend))
return 0;
}
@@ -268,7 +272,7 @@ int pnp_check_port(struct pnp_dev * dev, int idx)
if (dev->res.port_resource[tmp].flags & IORESOURCE_IO) {
tport = &dev->res.port_resource[tmp].start;
tend = &dev->res.port_resource[tmp].end;
- if (ranged_conflict(port,end,tport,tend))
+ if (ranged_conflict(port, end, tport, tend))
return 0;
}
}
@@ -279,11 +283,12 @@ int pnp_check_port(struct pnp_dev * dev, int idx)
continue;
for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) {
if (tdev->res.port_resource[tmp].flags & IORESOURCE_IO) {
- if (cannot_compare(tdev->res.port_resource[tmp].flags))
+ if (cannot_compare
+ (tdev->res.port_resource[tmp].flags))
continue;
tport = &tdev->res.port_resource[tmp].start;
tend = &tdev->res.port_resource[tmp].end;
- if (ranged_conflict(port,end,tport,tend))
+ if (ranged_conflict(port, end, tport, tend))
return 0;
}
}
@@ -292,11 +297,12 @@ int pnp_check_port(struct pnp_dev * dev, int idx)
return 1;
}
-int pnp_check_mem(struct pnp_dev * dev, int idx)
+int pnp_check_mem(struct pnp_dev *dev, int idx)
{
int tmp;
struct pnp_dev *tdev;
resource_size_t *addr, *end, *taddr, *tend;
+
addr = &dev->res.mem_resource[idx].start;
end = &dev->res.mem_resource[idx].end;
@@ -306,8 +312,8 @@ int pnp_check_mem(struct pnp_dev * dev, int idx)
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
- if(!dev->active) {
- if (check_mem_region(*addr, length(addr,end)))
+ if (!dev->active) {
+ if (check_mem_region(*addr, length(addr, end)))
return 0;
}
@@ -315,7 +321,7 @@ int pnp_check_mem(struct pnp_dev * dev, int idx)
for (tmp = 0; tmp < 8; tmp++) {
int raddr = pnp_reserve_mem[tmp << 1];
int rend = pnp_reserve_mem[(tmp << 1) + 1] + raddr - 1;
- if (ranged_conflict(addr,end,&raddr,&rend))
+ if (ranged_conflict(addr, end, &raddr, &rend))
return 0;
}
@@ -324,7 +330,7 @@ int pnp_check_mem(struct pnp_dev * dev, int idx)
if (dev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
taddr = &dev->res.mem_resource[tmp].start;
tend = &dev->res.mem_resource[tmp].end;
- if (ranged_conflict(addr,end,taddr,tend))
+ if (ranged_conflict(addr, end, taddr, tend))
return 0;
}
}
@@ -335,11 +341,12 @@ int pnp_check_mem(struct pnp_dev * dev, int idx)
continue;
for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
if (tdev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
- if (cannot_compare(tdev->res.mem_resource[tmp].flags))
+ if (cannot_compare
+ (tdev->res.mem_resource[tmp].flags))
continue;
taddr = &tdev->res.mem_resource[tmp].start;
tend = &tdev->res.mem_resource[tmp].end;
- if (ranged_conflict(addr,end,taddr,tend))
+ if (ranged_conflict(addr, end, taddr, tend))
return 0;
}
}
@@ -353,11 +360,11 @@ static irqreturn_t pnp_test_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
-int pnp_check_irq(struct pnp_dev * dev, int idx)
+int pnp_check_irq(struct pnp_dev *dev, int idx)
{
int tmp;
struct pnp_dev *tdev;
- resource_size_t * irq = &dev->res.irq_resource[idx].start;
+ resource_size_t *irq = &dev->res.irq_resource[idx].start;
/* if the resource doesn't exist, don't complain about it */
if (cannot_compare(dev->res.irq_resource[idx].flags))
@@ -394,9 +401,9 @@ int pnp_check_irq(struct pnp_dev * dev, int idx)
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
- if(!dev->active) {
+ if (!dev->active) {
if (request_irq(*irq, pnp_test_handler,
- IRQF_DISABLED|IRQF_PROBE_SHARED, "pnp", NULL))
+ IRQF_DISABLED | IRQF_PROBE_SHARED, "pnp", NULL))
return 0;
free_irq(*irq, NULL);
}
@@ -407,7 +414,8 @@ int pnp_check_irq(struct pnp_dev * dev, int idx)
continue;
for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) {
if (tdev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) {
- if (cannot_compare(tdev->res.irq_resource[tmp].flags))
+ if (cannot_compare
+ (tdev->res.irq_resource[tmp].flags))
continue;
if ((tdev->res.irq_resource[tmp].start == *irq))
return 0;
@@ -418,12 +426,12 @@ int pnp_check_irq(struct pnp_dev * dev, int idx)
return 1;
}
-int pnp_check_dma(struct pnp_dev * dev, int idx)
+int pnp_check_dma(struct pnp_dev *dev, int idx)
{
#ifndef CONFIG_IA64
int tmp;
struct pnp_dev *tdev;
- resource_size_t * dma = &dev->res.dma_resource[idx].start;
+ resource_size_t *dma = &dev->res.dma_resource[idx].start;
/* if the resource doesn't exist, don't complain about it */
if (cannot_compare(dev->res.dma_resource[idx].flags))
@@ -449,7 +457,7 @@ int pnp_check_dma(struct pnp_dev * dev, int idx)
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
- if(!dev->active) {
+ if (!dev->active) {
if (request_dma(*dma, "pnp"))
return 0;
free_dma(*dma);
@@ -461,7 +469,8 @@ int pnp_check_dma(struct pnp_dev * dev, int idx)
continue;
for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) {
if (tdev->res.dma_resource[tmp].flags & IORESOURCE_DMA) {
- if (cannot_compare(tdev->res.dma_resource[tmp].flags))
+ if (cannot_compare
+ (tdev->res.dma_resource[tmp].flags))
continue;
if ((tdev->res.dma_resource[tmp].start == *dma))
return 0;
@@ -471,30 +480,18 @@ int pnp_check_dma(struct pnp_dev * dev, int idx)
return 1;
#else
- /* IA64 hasn't legacy DMA */
+ /* IA64 does not have legacy DMA */
return 0;
#endif
}
-
-#if 0
-EXPORT_SYMBOL(pnp_register_dependent_option);
-EXPORT_SYMBOL(pnp_register_independent_option);
-EXPORT_SYMBOL(pnp_register_irq_resource);
-EXPORT_SYMBOL(pnp_register_dma_resource);
-EXPORT_SYMBOL(pnp_register_port_resource);
-EXPORT_SYMBOL(pnp_register_mem_resource);
-#endif /* 0 */
-
-
/* format is: pnp_reserve_irq=irq1[,irq2] .... */
-
static int __init pnp_setup_reserve_irq(char *str)
{
int i;
for (i = 0; i < 16; i++)
- if (get_option(&str,&pnp_reserve_irq[i]) != 2)
+ if (get_option(&str, &pnp_reserve_irq[i]) != 2)
break;
return 1;
}
@@ -502,13 +499,12 @@ static int __init pnp_setup_reserve_irq(char *str)
__setup("pnp_reserve_irq=", pnp_setup_reserve_irq);
/* format is: pnp_reserve_dma=dma1[,dma2] .... */
-
static int __init pnp_setup_reserve_dma(char *str)
{
int i;
for (i = 0; i < 8; i++)
- if (get_option(&str,&pnp_reserve_dma[i]) != 2)
+ if (get_option(&str, &pnp_reserve_dma[i]) != 2)
break;
return 1;
}
@@ -516,13 +512,12 @@ static int __init pnp_setup_reserve_dma(char *str)
__setup("pnp_reserve_dma=", pnp_setup_reserve_dma);
/* format is: pnp_reserve_io=io1,size1[,io2,size2] .... */
-
static int __init pnp_setup_reserve_io(char *str)
{
int i;
for (i = 0; i < 16; i++)
- if (get_option(&str,&pnp_reserve_io[i]) != 2)
+ if (get_option(&str, &pnp_reserve_io[i]) != 2)
break;
return 1;
}
@@ -530,13 +525,12 @@ static int __init pnp_setup_reserve_io(char *str)
__setup("pnp_reserve_io=", pnp_setup_reserve_io);
/* format is: pnp_reserve_mem=mem1,size1[,mem2,size2] .... */
-
static int __init pnp_setup_reserve_mem(char *str)
{
int i;
for (i = 0; i < 16; i++)
- if (get_option(&str,&pnp_reserve_mem[i]) != 2)
+ if (get_option(&str, &pnp_reserve_mem[i]) != 2)
break;
return 1;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 02:42:33 +0000