ALSA: alsa: riptide: don't use own hex_to_bin() method

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 6 insertions, 6 deletions

diff --git a/sound/pci/riptide/riptide.c b/sound/pci/riptide/riptide.c
index ad4462677615..59d79962f236 100644
--- a/sound/pci/riptide/riptide.c
+++ b/sound/pci/riptide/riptide.c
@@ -97,6 +97,7 @@
 #include <linux/gameport.h>
 #include <linux/device.h>
 #include <linux/firmware.h>
+#include <linux/kernel.h>
 #include <asm/io.h>
 #include <sound/core.h>
 #include <sound/info.h>
@@ -667,13 +668,12 @@ static u32 atoh(const unsigned char *in, unsigned int len)
         unsigned char c;
 
         while (len) {
+                int value;
+
                 c = in[len - 1];
-                if ((c >= '0') && (c <= '9'))
-                        sum += mult * (c - '0');
-                else if ((c >= 'A') && (c <= 'F'))
-                        sum += mult * (c - ('A' - 10));
-                else if ((c >= 'a') && (c <= 'f'))
-                        sum += mult * (c - ('a' - 10));
+                value = hex_to_bin(c);
+                if (value >= 0)
+                        sum += mult * value;
                 mult *= 16;
                 --len;
         }