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path: root/drivers/firewire
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-rw-r--r--drivers/firewire/core-card.c17
-rw-r--r--drivers/firewire/core-topology.c17
-rw-r--r--drivers/firewire/core-transaction.c9
-rw-r--r--drivers/firewire/core.h2
4 files changed, 15 insertions, 30 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index f5813078999..7083bcc1b9c 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -38,7 +38,7 @@
#include "core.h"
-static int __compute_block_crc(__be32 *block)
+int fw_compute_block_crc(__be32 *block)
{
int length;
u16 crc;
@@ -50,19 +50,6 @@ static int __compute_block_crc(__be32 *block)
return length;
}
-int fw_compute_block_crc(u32 *block)
-{
- __be32 be32_block[256];
- int i, length;
-
- length = (*block >> 16) & 0xff;
- for (i = 0; i < length; i++)
- be32_block[i] = cpu_to_be32(block[i + 1]);
- *block |= crc_itu_t(0, (u8 *) be32_block, length * 4);
-
- return length;
-}
-
static DEFINE_MUTEX(card_mutex);
static LIST_HEAD(card_list);
@@ -141,7 +128,7 @@ static size_t generate_config_rom(struct fw_card *card, __be32 *config_rom)
* the bus info block, which is always the case for this
* implementation. */
for (i = 0; i < j; i += length + 1)
- length = __compute_block_crc(config_rom + i);
+ length = fw_compute_block_crc(config_rom + i);
return j;
}
diff --git a/drivers/firewire/core-topology.c b/drivers/firewire/core-topology.c
index fddf2b35893..9a5f38c80b0 100644
--- a/drivers/firewire/core-topology.c
+++ b/drivers/firewire/core-topology.c
@@ -28,9 +28,9 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/string.h>
#include <asm/atomic.h>
+#include <asm/byteorder.h>
#include <asm/system.h>
#include "core.h"
@@ -510,13 +510,16 @@ static void update_tree(struct fw_card *card, struct fw_node *root)
static void update_topology_map(struct fw_card *card,
u32 *self_ids, int self_id_count)
{
- int node_count;
+ int node_count = (card->root_node->node_id & 0x3f) + 1;
+ __be32 *map = card->topology_map;
+
+ *map++ = cpu_to_be32((self_id_count + 2) << 16);
+ *map++ = cpu_to_be32(be32_to_cpu(card->topology_map[1]) + 1);
+ *map++ = cpu_to_be32((node_count << 16) | self_id_count);
+
+ while (self_id_count--)
+ *map++ = cpu_to_be32p(self_ids++);
- card->topology_map[1]++;
- node_count = (card->root_node->node_id & 0x3f) + 1;
- card->topology_map[2] = (node_count << 16) | self_id_count;
- card->topology_map[0] = (self_id_count + 2) << 16;
- memcpy(&card->topology_map[3], self_ids, self_id_count * 4);
fw_compute_block_crc(card->topology_map);
}
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index da628c72a46..203e6428bad 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -810,8 +810,7 @@ static void handle_topology_map(struct fw_card *card, struct fw_request *request
int speed, unsigned long long offset,
void *payload, size_t length, void *callback_data)
{
- int i, start, end;
- __be32 *map;
+ int start;
if (!TCODE_IS_READ_REQUEST(tcode)) {
fw_send_response(card, request, RCODE_TYPE_ERROR);
@@ -824,11 +823,7 @@ static void handle_topology_map(struct fw_card *card, struct fw_request *request
}
start = (offset - topology_map_region.start) / 4;
- end = start + length / 4;
- map = payload;
-
- for (i = 0; i < length / 4; i++)
- map[i] = cpu_to_be32(card->topology_map[start + i]);
+ memcpy(payload, &card->topology_map[start], length);
fw_send_response(card, request, RCODE_COMPLETE);
}
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
index 7adca7cb9f5..ed3b1a765c0 100644
--- a/drivers/firewire/core.h
+++ b/drivers/firewire/core.h
@@ -94,7 +94,7 @@ int fw_card_add(struct fw_card *card,
u32 max_receive, u32 link_speed, u64 guid);
void fw_core_remove_card(struct fw_card *card);
int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset);
-int fw_compute_block_crc(u32 *block);
+int fw_compute_block_crc(__be32 *block);
void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
static inline struct fw_card *fw_card_get(struct fw_card *card)