ide: remove ide_find_best_pio_mode()

* Add ->host_flags to ide_hwif_t to store ide_pci_device_t.host_flags,
  assign it in setup-pci.c:ide_pci_setup_ports().

* Add IDE_HFLAG_PIO_NO_{BLACKLIST,DOWNGRADE} to ide_pci_device_t.host_flags
  and teach ide_get_best_pio_mode() about them.  Also remove needless
  !drive->id check while at it (drive->id is always present).

* Convert amd74xx, via82cxxx and ide-timing.h to use ide_get_best_pio_mode()
  and then remove no longer needed ide_find_best_pio_mode().

There should be no functionality changes caused by this patch.

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

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 14a87f619d17..9f72f6e0c954 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -681,6 +681,8 @@ typedef struct hwif_s {
         u8 straight8;   /* Alan's straight 8 check */
         u8 bus_state;   /* power state of the IDE bus */
 
+        u8 host_flags;
+
         u8 atapi_dma;   /* host supports atapi_dma */
         u8 ultra_mask;
         u8 mwdma_mask;
@@ -1245,7 +1247,12 @@ typedef struct ide_pci_enablebit_s {
 enum {
         /* Uses ISA control ports not PCI ones. */
         IDE_HFLAG_ISA_PORTS             = (1 << 0),
+        /* single port device */
         IDE_HFLAG_SINGLE                = (1 << 1),
+        /* don't use legacy PIO blacklist */
+        IDE_HFLAG_PIO_NO_BLACKLIST      = (1 << 2),
+        /* don't use conservative PIO "downgrade" */
+        IDE_HFLAG_PIO_NO_DOWNGRADE      = (1 << 3),
 };
 
 typedef struct ide_pci_device_s {