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authorStefan Richter <stefanr@s5r6.in-berlin.de>2009-12-26 01:44:10 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2009-12-29 19:58:17 +0100
commit13b302d0a217580c0129b0641b0ca8b592e437b0 (patch)
treeaa895bb410b4262d9942a0f77fe623c7d610da0c /drivers/firewire/core-device.c
parent3c2c58cb33b3b15a2c4871babeec8fe1456e1db6 (diff)
downloadop-kernel-dev-13b302d0a217580c0129b0641b0ca8b592e437b0.zip
op-kernel-dev-13b302d0a217580c0129b0641b0ca8b592e437b0.tar.gz
firewire: qualify config ROM cache pointers as const pointers
Several config ROM related functions only peek at the ROM cache; mark their arguments as const pointers. Ditto fw_device.config_rom and fw_unit.directory, as the memory behind them is meant to be write-once. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/core-device.c')
-rw-r--r--drivers/firewire/core-device.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index 5d5c6a6..eecd52d 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -43,7 +43,7 @@
#include "core.h"
-void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p)
+void fw_csr_iterator_init(struct fw_csr_iterator *ci, const u32 *p)
{
ci->p = p + 1;
ci->end = ci->p + (p[0] >> 16);
@@ -59,7 +59,7 @@ int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value)
}
EXPORT_SYMBOL(fw_csr_iterator_next);
-static u32 *search_leaf(u32 *directory, int search_key)
+static const u32 *search_leaf(const u32 *directory, int search_key)
{
struct fw_csr_iterator ci;
int last_key = 0, key, value;
@@ -76,7 +76,7 @@ static u32 *search_leaf(u32 *directory, int search_key)
return NULL;
}
-static int textual_leaf_to_string(u32 *block, char *buf, size_t size)
+static int textual_leaf_to_string(const u32 *block, char *buf, size_t size)
{
unsigned int quadlets, i;
char c;
@@ -116,9 +116,9 @@ static int textual_leaf_to_string(u32 *block, char *buf, size_t size)
* the immediate entry with @key. The string is zero-terminated.
* Returns strlen(buf) or a negative error code.
*/
-int fw_csr_string(u32 *directory, int key, char *buf, size_t size)
+int fw_csr_string(const u32 *directory, int key, char *buf, size_t size)
{
- u32 *leaf = search_leaf(directory, key);
+ const u32 *leaf = search_leaf(directory, key);
if (!leaf)
return -ENOENT;
@@ -128,7 +128,7 @@ EXPORT_SYMBOL(fw_csr_string);
static bool is_fw_unit(struct device *dev);
-static int match_unit_directory(u32 *directory, u32 match_flags,
+static int match_unit_directory(const u32 *directory, u32 match_flags,
const struct ieee1394_device_id *id)
{
struct fw_csr_iterator ci;
@@ -262,7 +262,7 @@ static ssize_t show_immediate(struct device *dev,
struct config_rom_attribute *attr =
container_of(dattr, struct config_rom_attribute, attr);
struct fw_csr_iterator ci;
- u32 *dir;
+ const u32 *dir;
int key, value, ret = -ENOENT;
down_read(&fw_device_rwsem);
@@ -293,7 +293,7 @@ static ssize_t show_text_leaf(struct device *dev,
{
struct config_rom_attribute *attr =
container_of(dattr, struct config_rom_attribute, attr);
- u32 *dir;
+ const u32 *dir;
size_t bufsize;
char dummy_buf[2];
int ret;
@@ -421,7 +421,7 @@ static ssize_t guid_show(struct device *dev,
return ret;
}
-static int units_sprintf(char *buf, u32 *directory)
+static int units_sprintf(char *buf, const u32 *directory)
{
struct fw_csr_iterator ci;
int key, value;
@@ -503,7 +503,8 @@ static int read_rom(struct fw_device *device,
*/
static int read_bus_info_block(struct fw_device *device, int generation)
{
- u32 *rom, *stack, *old_rom, *new_rom;
+ const u32 *old_rom, *new_rom;
+ u32 *rom, *stack;
u32 sp, key;
int i, end, length, ret = -1;
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