If word 53 bit 1 isn't set, the maximum PIO mode is indicated by
the upper 8 bits of word 51, not the lower 8 bits. Fixes PIO mode
detection on old Compact Flash cards.
Signed-off-by: Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>
Index: linux-2.6.19/drivers/ata/libata-core.c
===================================================================
--- linux-2.6.19.orig/drivers/ata/libata-core.c
+++ linux-2.6.19/drivers/ata/libata-core.c
@@ -1037,7 +1048,7 @@ static unsigned int ata_id_xfermask(cons
* the PIO timing number for the maximum. Turn it into
* a mask.
*/
- u8 mode = id[ATA_ID_OLD_PIO_MODES] & 0xFF;
+ u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF;
if (mode < 5) /* Valid PIO range */
pio_mask = (2 << mode) - 1;
else
-
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