kdb: Remove fallback interpretation of arbitrary numbers as hex

Remove logic that enables a fallback of interpreting numbers supplied in KDB CLI
to be interpreted as hex without explicit "0x" prefix as this can be confusing
for the end users.

Suggested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Nir Lichtman <nir@lichtman.org>
Link: https://lore.kernel.org/r/20241028192228.GC918454@lichtman.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>

Author: nir9

kernel/debug/kdb/kdb_main.c

@@ -402,23 +402,15 @@ static void kdb_printenv(void)
  */
 int kdbgetularg(const char *arg, unsigned long *value)
 {
-	/*
-	 * If the first fails, also try base 16, for us
-	 * folks too lazy to type the leading 0x...
-	 */
-	if (kstrtoul(arg, 0, value)) {
-		if (kstrtoul(arg, 16, value))
-			return KDB_BADINT;
-	}
+	if (kstrtoul(arg, 0, value))
+		return KDB_BADINT;
 	return 0;
 }
 
 int kdbgetu64arg(const char *arg, u64 *value)
 {
-	if (kstrtou64(arg, 0, value)) {
-		if (kstrtou64(arg, 16, value))
-			return KDB_BADINT;
-	}
+	if (kstrtou64(arg, 0, value))
+		return KDB_BADINT;
 	return 0;
 }