ide: call udma_filter() before resorting to the UltraDMA mask

[linux-2.6] / drivers / ide / ide-lib.c

diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index df29868209f39f15cb4e7aaae67215cf06660b46..92a6c7bcf5278dc8594eb7a73113c9d648647f63 100644 (file)
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -291,11 +291,11 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
        struct hd_driveid* id = drive->id;
        int overridden  = 0;
 
-       if (mode_wanted != 255) {
-               pio_mode = mode_wanted;
-       } else if (!drive->id) {
-               pio_mode = 0;
-       } else if ((pio_mode = ide_scan_pio_blacklist(id->model)) != -1) {
+       if (mode_wanted != 255)
+               return min_t(u8, mode_wanted, max_mode);
+
+       if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0 &&
+           (pio_mode = ide_scan_pio_blacklist(id->model)) != -1) {
                printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name);
        } else {
                pio_mode = id->tPIO;
@@ -324,7 +324,8 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
                /*
                 * Conservative "downgrade" for all pre-ATA2 drives
                 */
-               if (pio_mode && pio_mode < 4) {
+               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);