ide: add ->dma_timer_expiry method and remove ->dma_exec_cmd one (v2)

* Rename dma_timer_expiry() to ide_dma_sff_timer_expiry() and export it.

* Add ->dma_timer_expiry method and use it to set hwif->expiry for
  ATA_PROT_DMA protocol in do_rw_taskfile().

* Initialize ->dma_timer_expiry to ide_dma_sff_timer_expiry() for SFF hosts.

* Move setting hwif->expiry from ide_execute_command() to its users and drop
  'expiry' argument.

* Use ide_execute_command() instead of ->dma_exec_cmd in do_rw_taskfile().

* Remove ->dma_exec_cmd method and its implementations.

* Unexport ide_execute_command() and ide_dma_intr().

v2:
* Fix CONFIG_BLK_DEV_IDEDMA=n build (noticed by Randy Dunlap).

* Fix *dma_expiry naming (suggested by Sergei Shtylyov).

There should be no functional changes caused by this patch.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 4 insertions, 11 deletions

diff --git a/drivers/ide/ide-dma-sff.c b/drivers/ide/ide-dma-sff.c
index b7eb810c7b8f..75a9ea2e4c82 100644
--- a/drivers/ide/ide-dma-sff.c
+++ b/drivers/ide/ide-dma-sff.c
@@ -224,7 +224,7 @@ int ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
 EXPORT_SYMBOL_GPL(ide_dma_setup);
 
 /**
- *      dma_timer_expiry        -       handle a DMA timeout
+ *      ide_dma_sff_timer_expiry        -       handle a DMA timeout
  *      @drive: Drive that timed out
  *
  *      An IDE DMA transfer timed out. In the event of an error we ask
@@ -237,7 +237,7 @@ EXPORT_SYMBOL_GPL(ide_dma_setup);
  *      This can occur if an interrupt is lost or due to hang or bugs.
  */
 
-static int dma_timer_expiry(ide_drive_t *drive)
+int ide_dma_sff_timer_expiry(ide_drive_t *drive)
 {
         ide_hwif_t *hwif = drive->hwif;
         u8 dma_stat = hwif->dma_ops->dma_sff_read_status(hwif);
@@ -261,14 +261,7 @@ static int dma_timer_expiry(ide_drive_t *drive)
 
         return 0;       /* Status is unknown -- reset the bus */
 }
-
-void ide_dma_exec_cmd(ide_drive_t *drive, u8 command)
-{
-        /* issue cmd to drive */
-        ide_execute_command(drive, command, &ide_dma_intr, 2 * WAIT_CMD,
-                            dma_timer_expiry);
-}
-EXPORT_SYMBOL_GPL(ide_dma_exec_cmd);
+EXPORT_SYMBOL_GPL(ide_dma_sff_timer_expiry);
 
 void ide_dma_start(ide_drive_t *drive)
 {
@@ -342,10 +335,10 @@ EXPORT_SYMBOL_GPL(ide_dma_test_irq);
 const struct ide_dma_ops sff_dma_ops = {
         .dma_host_set           = ide_dma_host_set,
         .dma_setup              = ide_dma_setup,
-        .dma_exec_cmd           = ide_dma_exec_cmd,
         .dma_start              = ide_dma_start,
         .dma_end                = ide_dma_end,
         .dma_test_irq           = ide_dma_test_irq,
+        .dma_timer_expiry       = ide_dma_sff_timer_expiry,
         .dma_timeout            = ide_dma_timeout,
         .dma_lost_irq           = ide_dma_lost_irq,
         .dma_sff_read_status    = ide_dma_sff_read_status,