[PATCH] libata: use correct map_db values for ICH8

Use valid values for ICH8 map_db.  With the old values, when the
controller was in Native mode, and SCC was 1 (drives configured for
IDE), any drive plugged into a slave port was not recognized.  For
Combined Mode (and SCC is still 1), 2 is a value value for MAP.map_value,
and needs to be recognized.

Signed-off-by:  Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 5719704..5250187 100644 (file)
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -432,9 +432,9 @@ static const struct piix_map_db ich8_map_db = {
        .present_shift = 8,
        .map = {
                /* PM   PS   SM   SS       MAP */
-               {  P0,  NA,  P1,  NA }, /* 00b (hardwired) */
+               {  P0,  P2,  P1,  P3 }, /* 00b (hardwired when in AHCI) */
                {  RV,  RV,  RV,  RV },
-               {  RV,  RV,  RV,  RV }, /* 10b (never) */
+               {  IDE,  IDE,  NA,  NA }, /* 10b (IDE mode) */
                {  RV,  RV,  RV,  RV },
        },
 };