firewire: mark some structs const
Instances of struct file_operations and struct fw_card_driver can be
qualified as "const". Ditto with struct fw_descriptor.data, struct
fw_device_id, and predefined instances of struct fw_address_region,
at least in the current implementation.
Data qualified as const is placed into the .rodata section which won't
be mixed with dirty data.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
index 292add5..2f849c8 100644
--- a/drivers/firewire/fw-transaction.h
+++ b/drivers/firewire/fw-transaction.h
@@ -133,7 +133,7 @@
struct list_head link;
size_t length;
u32 key;
- u32 *data;
+ const u32 *data;
};
int fw_core_add_descriptor (struct fw_descriptor *desc);
@@ -218,14 +218,14 @@
u64 end;
};
-extern struct fw_address_region fw_low_memory_region;
-extern struct fw_address_region fw_high_memory_region;
-extern struct fw_address_region fw_private_region;
-extern struct fw_address_region fw_csr_region;
-extern struct fw_address_region fw_unit_space_region;
+extern const struct fw_address_region fw_low_memory_region;
+extern const struct fw_address_region fw_high_memory_region;
+extern const struct fw_address_region fw_private_region;
+extern const struct fw_address_region fw_csr_region;
+extern const struct fw_address_region fw_unit_space_region;
int fw_core_add_address_handler(struct fw_address_handler *handler,
- struct fw_address_region *region);
+ const struct fw_address_region *region);
void fw_core_remove_address_handler(struct fw_address_handler *handler);
void fw_send_response(struct fw_card *card,
struct fw_request *request, int rcode);
@@ -233,7 +233,7 @@
extern struct bus_type fw_bus_type;
struct fw_card {
- struct fw_card_driver *driver;
+ const struct fw_card_driver *driver;
struct device *device;
int node_id;
@@ -399,7 +399,7 @@
/* Do we need phy speed here also? If we add more args, maybe we
should go back to struct fw_card_info. */
void
-fw_card_initialize(struct fw_card *card, struct fw_card_driver *driver,
+fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
struct device *device);
int
fw_card_add(struct fw_card *card,