ide: remove CONFIG_BLK_DEV_IDEDMA_FORCED

This code doesn't use pci_assign_resource() and ide_get_or_set_dma_base() uses
pci_resource_start() to get DMA base address so it has no chance of working.
Moreover this belongs to PCI quirks (in case somebody would like to fix it).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

2 files changed, 3 insertions, 51 deletions

diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 8982c0932438..5fbd06b7893d 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -435,14 +435,6 @@ config BLK_DEV_IDEDMA_PCI
         bool
         select BLK_DEV_IDEPCI
 
-config BLK_DEV_IDEDMA_FORCED
-        bool "Force enable legacy 2.0.X HOSTS to use DMA"
-        depends on BLK_DEV_IDEDMA_PCI
-        help
-          This is an old piece of lost code from Linux 2.0 Kernels.
-
-          Generally say N here.
-
 # TODO: remove it
 config IDEDMA_ONLYDISK
         bool "Enable DMA only for disks "
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index 1129f8c30840..f620da42e157 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -145,27 +145,13 @@ static int ide_setup_pci_baseregs (struct pci_dev *dev, const char *name)
 }
 
 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
-
-#ifdef CONFIG_BLK_DEV_IDEDMA_FORCED
-/*
- * Long lost data from 2.0.34 that is now in 2.0.39
- *
- * This was used in ./drivers/block/triton.c to do DMA Base address setup
- * when PnP failed.  Oh the things we forget.  I believe this was part
- * of SFF-8038i that has been withdrawn from public access... :-((
- */
-#define DEFAULT_BMIBA   0xe800  /* in case BIOS did not init it */
-#define DEFAULT_BMCRBA  0xcc00  /* VIA's default value */
-#define DEFAULT_BMALIBA 0xd400  /* ALI's default value */
-#endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */
-
 /**
  *      ide_get_or_set_dma_base         -       setup BMIBA
  *      @hwif: Interface
  *
- *      Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space:
- *      If need be we set up the DMA base. Where a device has a partner that
- *      is already in DMA mode we check and enforce IDE simplex rules.
+ *      Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space.
+ *      Where a device has a partner that is already in DMA mode we check
+ *      and enforce IDE simplex rules.
  */
 
 static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif)
@@ -173,12 +159,6 @@ static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif)
         unsigned long   dma_base = 0;
         struct pci_dev  *dev = hwif->pci_dev;
 
-#ifdef CONFIG_BLK_DEV_IDEDMA_FORCED
-        int second_chance = 0;
-
-second_chance_to_dma:
-#endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */
-
         if (hwif->mmio)
                 return hwif->dma_base;
 
@@ -192,26 +172,6 @@ second_chance_to_dma:
                 }
         }
 
-#ifdef CONFIG_BLK_DEV_IDEDMA_FORCED
-        /* FIXME - should use pci_assign_resource surely */
-        if ((!dma_base) && (!second_chance)) {
-                unsigned long set_bmiba = 0;
-                second_chance++;
-                switch(dev->vendor) {
-                        case PCI_VENDOR_ID_AL:
-                                set_bmiba = DEFAULT_BMALIBA; break;
-                        case PCI_VENDOR_ID_VIA:
-                                set_bmiba = DEFAULT_BMCRBA; break;
-                        case PCI_VENDOR_ID_INTEL:
-                                set_bmiba = DEFAULT_BMIBA; break;
-                        default:
-                                return dma_base;
-                }
-                pci_write_config_dword(dev, 0x20, set_bmiba|1);
-                goto second_chance_to_dma;
-        }
-#endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */
-
         if (dma_base) {
                 u8 simplex_stat = 0;
                 dma_base += hwif->channel ? 8 : 0;