* 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>
 static const struct ide_dma_ops ali_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ali15x3_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_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 
 }
 
 
-static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command)
-{
-       /* issue cmd to drive */
-       ide_execute_command(drive, command, &ide_dma_intr,
-                           (2*WAIT_CMD), NULL);
-}
-
 static int auide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
 {
        if (auide_build_dmatable(drive, cmd) == 0) {
 static const struct ide_dma_ops au1xxx_dma_ops = {
        .dma_host_set           = auide_dma_host_set,
        .dma_setup              = auide_dma_setup,
-       .dma_exec_cmd           = auide_dma_exec_cmd,
        .dma_start              = auide_dma_start,
        .dma_end                = auide_dma_end,
        .dma_test_irq           = auide_dma_test_irq,
 
 static const struct ide_dma_ops cmd64x_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                = cmd64x_dma_end,
        .dma_test_irq           = cmd64x_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 static const struct ide_dma_ops cmd646_rev1_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                = cmd646_1_dma_end,
        .dma_test_irq           = ide_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 static const struct ide_dma_ops cmd648_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                = cmd648_dma_end,
        .dma_test_irq           = cmd648_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 
 static const struct ide_dma_ops cs5536_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ide_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = cs5536_dma_start,
        .dma_end                = cs5536_dma_end,
        .dma_test_irq           = ide_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
 };
 
 
 static const struct ide_dma_ops hpt37x_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                = hpt374_dma_end,
        .dma_test_irq           = hpt374_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 static const struct ide_dma_ops hpt370_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ide_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = hpt370_dma_start,
        .dma_end                = hpt370_dma_end,
        .dma_test_irq           = ide_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = hpt370_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 static const struct ide_dma_ops hpt36x_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_lost_irq           = hpt366_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 
        return 0;
 }
 
-static void icside_dma_exec_cmd(ide_drive_t *drive, u8 cmd)
-{
-       /* issue cmd to drive */
-       ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD, NULL);
-}
-
 static int icside_dma_test_irq(ide_drive_t *drive)
 {
        ide_hwif_t *hwif = drive->hwif;
 static const struct ide_dma_ops icside_v6_dma_ops = {
        .dma_host_set           = icside_dma_host_set,
        .dma_setup              = icside_dma_setup,
-       .dma_exec_cmd           = icside_dma_exec_cmd,
        .dma_start              = icside_dma_start,
        .dma_end                = icside_dma_end,
        .dma_test_irq           = icside_dma_test_irq,
 
        if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
                if (drive->dma)
                        drive->waiting_for_dma = 0;
+               hwif->expiry = expiry;
                ide_execute_command(drive, ATA_CMD_PACKET, ide_transfer_pc,
-                                   timeout, expiry);
+                                   timeout);
                return ide_started;
        } else {
                ide_execute_pkt_cmd(drive);
 
 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
  *     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);
 
        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)
 {
 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,
 
        }
        return ide_error(drive, "dma_intr", stat);
 }
-EXPORT_SYMBOL_GPL(ide_dma_intr);
 
 int ide_dma_good_drive(ide_drive_t *drive)
 {
 
  *     @command: command byte to write
  *     @handler: handler for next phase
  *     @timeout: timeout for command
- *     @expiry:  handler to run on timeout
  *
  *     Helper function to issue an IDE command. This handles the
  *     atomicity requirements, command timing and ensures that the
  */
 
 void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler,
-                        unsigned timeout, ide_expiry_t *expiry)
+                        unsigned timeout)
 {
        ide_hwif_t *hwif = drive->hwif;
        unsigned long flags;
 
-       hwif->expiry = expiry;
-
        spin_lock_irqsave(&hwif->lock, flags);
        __ide_set_handler(drive, handler, timeout);
        hwif->tp_ops->exec_command(hwif, cmd);
        ndelay(400);
        spin_unlock_irqrestore(&hwif->lock, flags);
 }
-EXPORT_SYMBOL(ide_execute_command);
 
 void ide_execute_pkt_cmd(ide_drive_t *drive)
 {
 
                if (handler == NULL)
                        handler = task_no_data_intr;
                ide_execute_command(drive, tf->command, handler,
-                                   WAIT_WORSTCASE, NULL);
+                                   WAIT_WORSTCASE);
                return ide_started;
        case ATA_PROT_DMA:
                if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
                    ide_build_sglist(drive, cmd) == 0 ||
                    dma_ops->dma_setup(drive, cmd))
                        return ide_stopped;
-               dma_ops->dma_exec_cmd(drive, tf->command);
+               hwif->expiry = dma_ops->dma_timer_expiry;
+               ide_execute_command(drive, tf->command, ide_dma_intr,
+                                   2 * WAIT_CMD);
                dma_ops->dma_start(drive);
        default:
                return ide_started;
 
 static struct ide_dma_ops it821x_pass_through_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ide_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = it821x_dma_start,
        .dma_end                = it821x_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,
 
 static const struct ide_dma_ops ns87415_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ns87415_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = ide_dma_start,
        .dma_end                = ns87415_dma_end,
        .dma_test_irq           = ide_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = superio_dma_sff_read_status,
 };
 
 static const struct ide_dma_ops pdc20246_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           = pdc202xx_dma_test_irq,
        .dma_lost_irq           = pdc202xx_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = pdc202xx_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 static const struct ide_dma_ops pdc2026x_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ide_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = pdc202xx_dma_start,
        .dma_end                = pdc202xx_dma_end,
        .dma_test_irq           = pdc202xx_dma_test_irq,
        .dma_lost_irq           = pdc202xx_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = pdc202xx_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 
        return 0;
 }
 
-static void
-pmac_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, NULL);
-}
-
 /*
  * Kick the DMA controller into life after the DMA command has been issued
  * to the drive.
 static const struct ide_dma_ops pmac_dma_ops = {
        .dma_host_set           = pmac_ide_dma_host_set,
        .dma_setup              = pmac_ide_dma_setup,
-       .dma_exec_cmd           = pmac_ide_dma_exec_cmd,
        .dma_start              = pmac_ide_dma_start,
        .dma_end                = pmac_ide_dma_end,
        .dma_test_irq           = pmac_ide_dma_test_irq,
 
 static const struct ide_dma_ops sc1200_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                = sc1200_dma_end,
        .dma_test_irq           = ide_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 
 static const struct ide_dma_ops scc_dma_ops = {
        .dma_host_set           = scc_dma_host_set,
        .dma_setup              = scc_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = scc_dma_start,
        .dma_end                = scc_dma_end,
        .dma_test_irq           = scc_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
        .dma_timeout            = ide_dma_timeout,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_sff_read_status    = scc_dma_sff_read_status,
 };
 
 
 static const struct ide_dma_ops sil_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           = siimage_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,
 
 static const struct ide_dma_ops sl82c105_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ide_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = sl82c105_dma_start,
        .dma_end                = sl82c105_dma_end,
        .dma_test_irq           = ide_dma_test_irq,
        .dma_lost_irq           = sl82c105_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = sl82c105_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 
 static const struct ide_dma_ops tc86c001_dma_ops = {
        .dma_host_set           = ide_dma_host_set,
        .dma_setup              = ide_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = tc86c001_dma_start,
        .dma_end                = ide_dma_end,
        .dma_test_irq           = ide_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = ide_dma_sff_read_status,
 };
 
        trm290_prepare_drive(drive, !!(drive->dev_flags & IDE_DFLAG_USING_DMA));
 }
 
-static void trm290_dma_exec_cmd(ide_drive_t *drive, u8 command)
-{
-       ide_execute_command(drive, command, &ide_dma_intr, WAIT_CMD, NULL);
-}
-
 static int trm290_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
 {
        ide_hwif_t *hwif = drive->hwif;
 static struct ide_dma_ops trm290_dma_ops = {
        .dma_host_set           = trm290_dma_host_set,
        .dma_setup              = trm290_dma_setup,
-       .dma_exec_cmd           = trm290_dma_exec_cmd,
        .dma_start              = trm290_dma_start,
        .dma_end                = trm290_dma_end,
        .dma_test_irq           = trm290_dma_test_irq,
 
 static const struct ide_dma_ops tx4939ide_dma_ops = {
        .dma_host_set           = tx4939ide_dma_host_set,
        .dma_setup              = tx4939ide_dma_setup,
-       .dma_exec_cmd           = ide_dma_exec_cmd,
        .dma_start              = ide_dma_start,
        .dma_end                = tx4939ide_dma_end,
        .dma_test_irq           = tx4939ide_dma_test_irq,
        .dma_lost_irq           = ide_dma_lost_irq,
+       .dma_timer_expiry       = ide_dma_sff_timer_expiry,
        .dma_timeout            = ide_dma_timeout,
        .dma_sff_read_status    = tx4939ide_dma_sff_read_status,
 };
 
 struct ide_dma_ops {
        void    (*dma_host_set)(struct ide_drive_s *, int);
        int     (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
-       void    (*dma_exec_cmd)(struct ide_drive_s *, u8);
        void    (*dma_start)(struct ide_drive_s *);
        int     (*dma_end)(struct ide_drive_s *);
        int     (*dma_test_irq)(struct ide_drive_s *);
        void    (*dma_lost_irq)(struct ide_drive_s *);
+       int     (*dma_timer_expiry)(struct ide_drive_s *);
        void    (*dma_timeout)(struct ide_drive_s *);
        /*
         * The following method is optional and only required to be
 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
 
-void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
-                        ide_expiry_t *);
+void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int);
 
 void ide_execute_pkt_cmd(ide_drive_t *);
 
 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
 void ide_dma_host_set(ide_drive_t *, int);
 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
-void ide_dma_exec_cmd(ide_drive_t *, u8);
 extern void ide_dma_start(ide_drive_t *);
 int ide_dma_end(ide_drive_t *);
 int ide_dma_test_irq(ide_drive_t *);
+int ide_dma_sff_timer_expiry(ide_drive_t *);
 u8 ide_dma_sff_read_status(ide_hwif_t *);
 extern const struct ide_dma_ops sff_dma_ops;
 #else
 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
+static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
 static inline int ide_build_sglist(ide_drive_t *drive,