libata: separate ATA_EHI_DID_RESET into DID_SOFTRESET and DID_HARDRESET

Separate ATA_EHI_DID_RESET into ATA_EHI_DID_SOFTRESET and
ATA_EHI_DID_HARDRESET.  ATA_EHI_DID_RESET is redefined as OR of the
two flags.  This patch doesn't introduce any behavior change.  This
will be used later to determine whether _SDD is necessary or not.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/libata-eh.c

@@ -1671,7 +1671,10 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 				reset == softreset ? "soft" : "hard");
 
 	/* mark that this EH session started with reset */
-	ehc->i.flags |= ATA_EHI_DID_RESET;
+	if (reset == hardreset)
+		ehc->i.flags |= ATA_EHI_DID_HARDRESET;
+	else
+		ehc->i.flags |= ATA_EHI_DID_SOFTRESET;
 
 	rc = ata_do_reset(ap, reset, classes);
 

include/linux/libata.h

@@ -282,11 +282,13 @@ enum {
 	ATA_EHI_NO_AUTOPSY	= (1 << 2),  /* no autopsy */
 	ATA_EHI_QUIET		= (1 << 3),  /* be quiet */
 
-	ATA_EHI_DID_RESET	= (1 << 16), /* already reset this port */
-	ATA_EHI_PRINTINFO	= (1 << 17), /* print configuration info */
-	ATA_EHI_SETMODE		= (1 << 18), /* configure transfer mode */
-	ATA_EHI_POST_SETMODE	= (1 << 19), /* revaildating after setmode */
+	ATA_EHI_DID_SOFTRESET	= (1 << 16), /* already soft-reset this port */
+	ATA_EHI_DID_HARDRESET	= (1 << 17), /* already soft-reset this port */
+	ATA_EHI_PRINTINFO	= (1 << 18), /* print configuration info */
+	ATA_EHI_SETMODE		= (1 << 19), /* configure transfer mode */
+	ATA_EHI_POST_SETMODE	= (1 << 20), /* revaildating after setmode */
 
+	ATA_EHI_DID_RESET	= ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
 	ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK,
 
 	/* max repeat if error condition is still set after ->error_handler */