Commit 7a0f1c8a authored Jan 29, 2007 by Lennert Buytenhek Committed by Jeff Garzik Jan 30, 2007

ata_if_xfermask() word 51 fix



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@wantstofly.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

parent 5dcade90

drivers/ata/libata-core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1037,7 +1037,7 @@ static unsigned int ata_id_xfermask(const u16 *id)
		* 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