From 13b302d0a217580c0129b0641b0ca8b592e437b0 Mon Sep 17 00:00:00 2001 From: Stefan Richter Date: Sat, 26 Dec 2009 01:44:10 +0100 Subject: 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 --- drivers/firewire/core-device.c | 21 +++++++++++---------- drivers/firewire/sbp2.c | 5 +++-- 2 files changed, 14 insertions(+), 12 deletions(-) (limited to 'drivers/firewire') 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; diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c index d485cdd..7e33b0b 100644 --- a/drivers/firewire/sbp2.c +++ b/drivers/firewire/sbp2.c @@ -1014,7 +1014,8 @@ static int sbp2_add_logical_unit(struct sbp2_target *tgt, int lun_entry) return 0; } -static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, u32 *directory) +static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, + const u32 *directory) { struct fw_csr_iterator ci; int key, value; @@ -1027,7 +1028,7 @@ static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, u32 *directory) return 0; } -static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory, +static int sbp2_scan_unit_dir(struct sbp2_target *tgt, const u32 *directory, u32 *model, u32 *firmware_revision) { struct fw_csr_iterator ci; -- cgit v1.1