firewire: fw_send_request_sync()

Share code between fw_send_request + wait_for_completion callers.

Signed-off-by: Jay Fenlason <fenlason@redhat.com>

Addendum:
Removes an unnecessary struct and an ununsed retry loop.
Calls it fw_run_transaction() instead of fw_send_request_sync().

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Kristian Høgsberg <krh@redhat.com>

1 files changed, 12 insertions, 34 deletions

diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index aaff50ebba1..05997cee4f3 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -621,25 +621,15 @@ sbp2_send_management_orb(struct sbp2_logical_unit *lu, int node_id,
         return retval;
 }
 
-static void
-complete_agent_reset_write(struct fw_card *card, int rcode,
-                           void *payload, size_t length, void *done)
-{
-        complete(done);
-}
-
 static void sbp2_agent_reset(struct sbp2_logical_unit *lu)
 {
         struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
-        DECLARE_COMPLETION_ONSTACK(done);
-        struct fw_transaction t;
-        static u32 z;
+        __be32 d = 0;
 
-        fw_send_request(device->card, &t, TCODE_WRITE_QUADLET_REQUEST,
-                        lu->tgt->node_id, lu->generation, device->max_speed,
-                        lu->command_block_agent_address + SBP2_AGENT_RESET,
-                        &z, sizeof(z), complete_agent_reset_write, &done);
-        wait_for_completion(&done);
+        fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
+                           lu->tgt->node_id, lu->generation, device->max_speed,
+                           lu->command_block_agent_address + SBP2_AGENT_RESET,
+                           &d, sizeof(d));
 }
 
 static void
@@ -653,7 +643,7 @@ static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu)
 {
         struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
         struct fw_transaction *t;
-        static u32 z;
+        static __be32 d;
 
         t = kmalloc(sizeof(*t), GFP_ATOMIC);
         if (t == NULL)
@@ -662,7 +652,7 @@ static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu)
         fw_send_request(device->card, t, TCODE_WRITE_QUADLET_REQUEST,
                         lu->tgt->node_id, lu->generation, device->max_speed,
                         lu->command_block_agent_address + SBP2_AGENT_RESET,
-                        &z, sizeof(z), complete_agent_reset_write_no_wait, t);
+                        &d, sizeof(d), complete_agent_reset_write_no_wait, t);
 }
 
 static void sbp2_set_generation(struct sbp2_logical_unit *lu, int generation)
@@ -823,13 +813,6 @@ static void sbp2_target_put(struct sbp2_target *tgt)
         kref_put(&tgt->kref, sbp2_release_target);
 }
 
-static void
-complete_set_busy_timeout(struct fw_card *card, int rcode,
-                          void *payload, size_t length, void *done)
-{
-        complete(done);
-}
-
 /*
  * Write retransmit retry values into the BUSY_TIMEOUT register.
  * - The single-phase retry protocol is supported by all SBP-2 devices, but the
@@ -849,17 +832,12 @@ complete_set_busy_timeout(struct fw_card *card, int rcode,
 static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu)
 {
         struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
-        DECLARE_COMPLETION_ONSTACK(done);
-        struct fw_transaction t;
-        static __be32 busy_timeout;
-
-        busy_timeout = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT);
+        __be32 d = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT);
 
-        fw_send_request(device->card, &t, TCODE_WRITE_QUADLET_REQUEST,
-                        lu->tgt->node_id, lu->generation, device->max_speed,
-                        CSR_REGISTER_BASE + CSR_BUSY_TIMEOUT, &busy_timeout,
-                        sizeof(busy_timeout), complete_set_busy_timeout, &done);
-        wait_for_completion(&done);
+        fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
+                           lu->tgt->node_id, lu->generation, device->max_speed,
+                           CSR_REGISTER_BASE + CSR_BUSY_TIMEOUT,
+                           &d, sizeof(d));
 }
 
 static void sbp2_reconnect(struct work_struct *work);