[PATCH] drivers/video: Replace custom macro with isdigit()

Replace the custom CHAR_IS_NUM() macro with isdigit() from <linux/ctype.h>

Signed-off-by: Tobias Klauser <[e-mail]>
Acked-by: "Antonino A. Daplas" <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/video/pm3fb.c

···
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
+#include <linux/ctype.h>
 
 #include <video/fbcon.h>
 #include <video/fbcon-mfb.h>
···
 {
 	char *next;
 
-	if (!(CHAR_IS_NUM(options[0]))) {
+	if (!(isdigit(options[0]))) {
 		(*bn) = 0;
 		return (options);
 	}

include/video/pm3fb.h

···
 /* do we want accelerated console  */
 #define PM3FB_USE_ACCEL 1
 
-/* useful ? */
-#define CHAR_IS_NUM(a)  ((((a) >= '0') && ((a) <= '9')) ? 1 : 0)
-
 /* for driver debugging ONLY */
 /* 0 = assert only, 1 = error, 2 = info, 3+ = verbose */
 /* define PM3FB_MASTER_DEBUG 1 */