AHCI: use ATA_BUSY

ahci_hardreset() and ahci_p5wdh_hardreset() use bare numbers for the
BSY bit of the ATA status register, despite it's #define'd in
<linux/ata.h>.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

drivers/ata/ahci.c

@@ -583,7 +583,7 @@ static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
 
 	/* clear D2H reception area to properly wait for D2H FIS */
 	ata_tf_init(link->device, &tf);
-	tf.command = 0x80;
+	tf.command = ATA_BUSY;
 	ata_tf_to_fis(&tf, 0, 0, d2h_fis);
 
 	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),

drivers/ata/libahci.c

@@ -1413,7 +1413,7 @@ static int ahci_hardreset(struct ata_link *link, unsigned int *class,
 
 	/* clear D2H reception area to properly wait for D2H FIS */
 	ata_tf_init(link->device, &tf);
-	tf.command = 0x80;
+	tf.command = ATA_BUSY;
 	ata_tf_to_fis(&tf, 0, 0, d2h_fis);
 
 	rc = sata_link_hardreset(link, timing, deadline, &online,