pcd: move the identify buffer into pcd_identify

No need to pass it through a bunch of functions.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

drivers/block/paride/pcd.c

@@ -630,10 +630,11 @@ static int pcd_drive_status(struct cdrom_device_info *cdi, int slot_nr)
 	return CDS_DISC_OK;
 }
 
-static int pcd_identify(struct pcd_unit *cd, char *id)
+static int pcd_identify(struct pcd_unit *cd)
 {
-	int k, s;
 	char id_cmd[12] = { 0x12, 0, 0, 0, 36, 0, 0, 0, 0, 0, 0, 0 };
+	char id[18];
+	int k, s;
 
 	pcd_bufblk = -1;
 
@@ -664,15 +665,15 @@ static int pcd_identify(struct pcd_unit *cd, char *id)
  * returns  0, with id set if drive is detected
  *	    -1, if drive detection failed
  */
-static int pcd_probe(struct pcd_unit *cd, int ms, char *id)
+static int pcd_probe(struct pcd_unit *cd, int ms)
 {
 	if (ms == -1) {
 		for (cd->drive = 0; cd->drive <= 1; cd->drive++)
-			if (!pcd_reset(cd) && !pcd_identify(cd, id))
+			if (!pcd_reset(cd) && !pcd_identify(cd))
 				return 0;
 	} else {
 		cd->drive = ms;
-		if (!pcd_reset(cd) && !pcd_identify(cd, id))
+		if (!pcd_reset(cd) && !pcd_identify(cd))
 			return 0;
 	}
 	return -1;
@@ -709,7 +710,6 @@ static void pcd_probe_capabilities(void)
 
 static int pcd_detect(void)
 {
-	char id[18];
 	int k, unit;
 	struct pcd_unit *cd;
 
@@ -727,7 +727,7 @@ static int pcd_detect(void)
 		cd = pcd;
 		if (cd->disk && pi_init(cd->pi, 1, -1, -1, -1, -1, -1,
 			    pcd_buffer, PI_PCD, verbose, cd->name)) {
-			if (!pcd_probe(cd, -1, id)) {
+			if (!pcd_probe(cd, -1)) {
 				cd->present = 1;
 				k++;
 			} else
@@ -744,7 +744,7 @@ static int pcd_detect(void)
 				     conf[D_UNI], conf[D_PRO], conf[D_DLY],
 				     pcd_buffer, PI_PCD, verbose, cd->name)) 
 				continue;
-			if (!pcd_probe(cd, conf[D_SLV], id)) {
+			if (!pcd_probe(cd, conf[D_SLV])) {
 				cd->present = 1;
 				k++;
 			} else