ATA: pata_octeon_cf: Use I/O clock rate for timing calculations.

The creation of the I/O clock domain requires some adjustments.  Since the
CF bus timing logic is clocked by the I/O clock, use its rate for delay
calculations.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/1660/
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

drivers/ata/pata_octeon_cf.c

@@ -60,7 +60,7 @@ static unsigned int ns_to_tim_reg(unsigned int tim_mult, unsigned int nsecs)
 	 * Compute # of eclock periods to get desired duration in
 	 * nanoseconds.
 	 */
-	val = DIV_ROUND_UP(nsecs * (octeon_get_clock_rate() / 1000000),
+	val = DIV_ROUND_UP(nsecs * (octeon_get_io_clock_rate() / 1000000),
 			  1000 * tim_mult);
 
 	return val;