ide: constify struct ide_dma_ops

* Export ide_dma_exec_cmd() and __ide_dma_test_irq().

* Constify struct ide_dma_ops.

* Always set hwif->dma_ops to &sff_dma_ops in ide_setup_dma()
  (it is later overriden by ide_init_port() if needed) and drop
  'const struct ide_port_info *d' argument.

While at it:

* Rename __ide_dma_test_irq() to ide_dma_test_irq().

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 987db35..b5a3bc3 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -731,7 +731,7 @@
 	if (ide_allocate_dma_engine(hwif))
 		return -1;
 
-	ide_setup_dma(hwif, base, d);
+	ide_setup_dma(hwif, base);
 
 	return 0;
 }
@@ -743,8 +743,15 @@
 	.cable_detect		= ali_cable_detect,
 };
 
-static struct ide_dma_ops ali_dma_ops = {
+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_timeout		= ide_dma_timeout,
 };
 
 static const struct ide_port_info ali15x3_chipset __devinitdata = {