ide: remove PIO "downgrade" quirk

No need for it nowadays so remove quirk code from ide_get_best_pio_mode()
and IDE_HFLAG_PIO_DOWNGRADE host flag.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 7031a8d..fa4c194 100644 (file)
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -274,16 +274,6 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
                if (overridden)
                        printk(KERN_INFO "%s: tPIO > 2, assuming tPIO = 2\n",
                                         drive->name);
-
-               /*
-                * Conservative "downgrade" for all pre-ATA2 drives
-                */
-               if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_DOWNGRADE) == 0 &&
-                   pio_mode && pio_mode < 4) {
-                       pio_mode--;
-                       printk(KERN_INFO "%s: applying conservative "
-                                        "PIO \"downgrade\"\n", drive->name);
-               }
        }
 
        if (pio_mode > max_mode)

diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 6851726..ff684d3 100644 (file)
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -219,7 +219,6 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
 
 #define IDE_HFLAGS_AMD \
        (IDE_HFLAG_PIO_NO_BLACKLIST | \
-        IDE_HFLAG_PIO_NO_DOWNGRADE | \
         IDE_HFLAG_ABUSE_SET_DMA_MODE | \
         IDE_HFLAG_POST_SET_MODE | \
         IDE_HFLAG_IO_32BIT | \

diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index b55d2e4..cff3caf 100644 (file)
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -429,7 +429,6 @@ static const struct ide_port_info via82cxxx_chipset __devinitdata = {
        .init_hwif      = init_hwif_via82cxxx,
        .enablebits     = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } },
        .host_flags     = IDE_HFLAG_PIO_NO_BLACKLIST |
-                         IDE_HFLAG_PIO_NO_DOWNGRADE |
                          IDE_HFLAG_ABUSE_SET_DMA_MODE |
                          IDE_HFLAG_POST_SET_MODE |
                          IDE_HFLAG_IO_32BIT,

diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 8f4080c..177961e 100644 (file)
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -921,7 +921,6 @@ pmac_ide_do_resume(ide_hwif_t *hwif)
 static const struct ide_port_info pmac_port_info = {
        .chipset                = ide_pmac,
        .host_flags             = IDE_HFLAG_SET_PIO_MODE_KEEP_DMA |
-                                 IDE_HFLAG_PIO_NO_DOWNGRADE |
                                  IDE_HFLAG_POST_SET_MODE |
                                  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
                                  IDE_HFLAG_UNMASK_IRQS,

diff --git a/include/linux/ide.h b/include/linux/ide.h
index eccc42b..c6d4de6 100644 (file)
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1027,8 +1027,6 @@ enum {
        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),
        /* use PIO8/9 for prefetch off/on */
        IDE_HFLAG_ABUSE_PREFETCH        = (1 << 4),
        /* use PIO6/7 for fast-devsel off/on */