drivers: scsi: use newly introduced hex_to_bin() method

Signed-off-by: Andy Shevchenko <[e-mail]>
Cc: Adaptec OEM Raid Solutions <[e-mail]>
Cc: "James E.J. Bottomley" <[e-mail]>
Cc: James Smart <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/scsi/aacraid/rx.c

···
 		pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
 		  post, paddr);
 		if (likely((buffer[0] == '0') && ((buffer[1] == 'x') || (buffer[1] == 'X')))) {
-			ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
-			ret <<= 4;
-			ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
+			ret = (hex_to_bin(buffer[2]) << 4) +
+				hex_to_bin(buffer[3]);
 		}
 		pci_free_consistent(dev->pdev, 512, buffer, baddr);
 		return ret;

drivers/scsi/lpfc/lpfc_attr.c

···
 #include <linux/interrupt.h>
 #include <linux/aer.h>
 #include <linux/gfp.h>
+#include <linux/kernel.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
···
 
 	/* Validate and store the new name */
 	for (i=0, j=0; i < 16; i++) {
-		if ((*buf >= 'a') && (*buf <= 'f'))
-			j = ((j << 4) | ((*buf++ -'a') + 10));
-		else if ((*buf >= 'A') && (*buf <= 'F'))
-			j = ((j << 4) | ((*buf++ -'A') + 10));
-		else if ((*buf >= '0') && (*buf <= '9'))
-			j = ((j << 4) | (*buf++ -'0'));
+		int value;
+
+		value = hex_to_bin(*buf++);
+		if (value >= 0)
+			j = (j << 4) | value;
 		else
 			return -EINVAL;
 		if (i % 2) {
···
 
 	/* Validate and store the new name */
 	for (i=0, j=0; i < 16; i++) {
-		if ((*buf >= 'a') && (*buf <= 'f'))
-			j = ((j << 4) | ((*buf++ -'a') + 10));
-		else if ((*buf >= 'A') && (*buf <= 'F'))
-			j = ((j << 4) | ((*buf++ -'A') + 10));
-		else if ((*buf >= '0') && (*buf <= '9'))
-			j = ((j << 4) | (*buf++ -'0'));
+		int value;
+
+		value = hex_to_bin(*buf++);
+		if (value >= 0)
+			j = (j << 4) | value;
 		else
 			return -EINVAL;
 		if (i % 2) {

drivers/scsi/scsi_transport_fc.c

···
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
+#include <linux/kernel.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport.h>
···
 
 	/* Validate and store the new name */
 	for (i=0, j=0; i < 16; i++) {
-		if ((*ns >= 'a') && (*ns <= 'f'))
-			j = ((j << 4) | ((*ns++ -'a') + 10));
-		else if ((*ns >= 'A') && (*ns <= 'F'))
-			j = ((j << 4) | ((*ns++ -'A') + 10));
-		else if ((*ns >= '0') && (*ns <= '9'))
-			j = ((j << 4) | (*ns++ -'0'));
+		int value;
+
+		value = hex_to_bin(*ns++);
+		if (value >= 0)
+			j = (j << 4) | value;
 		else
 			return -EINVAL;
 		if (i % 2) {