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>
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index df68021..4bd94bf 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -65,13 +65,13 @@
#define CSR_DIRECTORY_ID 0x20
struct fw_csr_iterator {
- u32 *p;
- u32 *end;
+ const u32 *p;
+ const u32 *end;
};
-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);
int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value);
-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);
extern struct bus_type fw_bus_type;
@@ -163,7 +163,7 @@
struct mutex client_list_mutex;
struct list_head client_list;
- u32 *config_rom;
+ const u32 *config_rom;
size_t config_rom_length;
int config_rom_retries;
unsigned is_local:1;
@@ -205,7 +205,7 @@
*/
struct fw_unit {
struct device device;
- u32 *directory;
+ const u32 *directory;
struct fw_attribute_group attribute_group;
};