ide: add IDE_HFLAG_ABUSE_SET_DMA_MODE host flag

[mirror_ubuntu-artful-kernel.git] / drivers / ide / ppc / pmac.c

diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 4559e29446e9deab3d8164dfba6058ab64272964..3dce80092fff0e32cb539cffc151337f047d4f79 100644 (file)
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -828,38 +828,20 @@ static void pmac_ide_set_dma_mode(ide_drive_t *drive, const u8 speed)
        tl[0] = *timings;
        tl[1] = *timings2;
 
-       switch(speed) {
 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
-               case XFER_UDMA_6:
-               case XFER_UDMA_5:
-               case XFER_UDMA_4:
-               case XFER_UDMA_3:
-               case XFER_UDMA_2:
-               case XFER_UDMA_1:
-               case XFER_UDMA_0:
-                       if (pmif->kind == controller_kl_ata4)
-                               ret = set_timings_udma_ata4(&tl[0], speed);
-                       else if (pmif->kind == controller_un_ata6
-                                || pmif->kind == controller_k2_ata6)
-                               ret = set_timings_udma_ata6(&tl[0], &tl[1], speed);
-                       else if (pmif->kind == controller_sh_ata6)
-                               ret = set_timings_udma_shasta(&tl[0], &tl[1], speed);
-                       else
-                               ret = 1;
-                       break;
-               case XFER_MW_DMA_2:
-               case XFER_MW_DMA_1:
-               case XFER_MW_DMA_0:
-                       set_timings_mdma(drive, pmif->kind, &tl[0], &tl[1], speed);
-                       break;
-               case XFER_SW_DMA_2:
-               case XFER_SW_DMA_1:
-               case XFER_SW_DMA_0:
-                       return;
+       if (speed >= XFER_UDMA_0) {
+               if (pmif->kind == controller_kl_ata4)
+                       ret = set_timings_udma_ata4(&tl[0], speed);
+               else if (pmif->kind == controller_un_ata6
+                        || pmif->kind == controller_k2_ata6)
+                       ret = set_timings_udma_ata6(&tl[0], &tl[1], speed);
+               else if (pmif->kind == controller_sh_ata6)
+                       ret = set_timings_udma_shasta(&tl[0], &tl[1], speed);
+               else
+                       ret = -1;
+       } else
+               set_timings_mdma(drive, pmif->kind, &tl[0], &tl[1], speed);
 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
-               default:
-                       ret = 1;
-       }
        if (ret)
                return;