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path: root/drivers/firewire/fw-device.c
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Diffstat (limited to 'drivers/firewire/fw-device.c')
-rw-r--r--drivers/firewire/fw-device.c37
1 files changed, 6 insertions, 31 deletions
diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c
index 0855fb5568e8..3fccdd484100 100644
--- a/drivers/firewire/fw-device.c
+++ b/drivers/firewire/fw-device.c
@@ -381,46 +381,21 @@ static struct device_attribute fw_device_attributes[] = {
381 __ATTR_NULL, 381 __ATTR_NULL,
382}; 382};
383 383
384struct read_quadlet_callback_data {
385 struct completion done;
386 int rcode;
387 u32 data;
388};
389
390static void
391complete_transaction(struct fw_card *card, int rcode,
392 void *payload, size_t length, void *data)
393{
394 struct read_quadlet_callback_data *callback_data = data;
395
396 if (rcode == RCODE_COMPLETE)
397 callback_data->data = be32_to_cpu(*(__be32 *)payload);
398 callback_data->rcode = rcode;
399 complete(&callback_data->done);
400}
401
402static int 384static int
403read_rom(struct fw_device *device, int generation, int index, u32 *data) 385read_rom(struct fw_device *device, int generation, int index, u32 *data)
404{ 386{
405 struct read_quadlet_callback_data callback_data; 387 int rcode;
406 struct fw_transaction t;
407 u64 offset;
408 388
409 /* device->node_id, accessed below, must not be older than generation */ 389 /* device->node_id, accessed below, must not be older than generation */
410 smp_rmb(); 390 smp_rmb();
411 391
412 init_completion(&callback_data.done); 392 rcode = fw_run_transaction(device->card, TCODE_READ_QUADLET_REQUEST,
413
414 offset = (CSR_REGISTER_BASE | CSR_CONFIG_ROM) + index * 4;
415 fw_send_request(device->card, &t, TCODE_READ_QUADLET_REQUEST,
416 device->node_id, generation, device->max_speed, 393 device->node_id, generation, device->max_speed,
417 offset, NULL, 4, complete_transaction, &callback_data); 394 (CSR_REGISTER_BASE | CSR_CONFIG_ROM) + index * 4,
418 395 data, 4);
419 wait_for_completion(&callback_data.done); 396 be32_to_cpus(data);
420
421 *data = callback_data.data;
422 397
423 return callback_data.rcode; 398 return rcode;
424} 399}
425 400
426#define READ_BIB_ROM_SIZE 256 401#define READ_BIB_ROM_SIZE 256