[PATCHv2] drivers: isdn: use new hex_to_bin() method

[Andy Shevchenko]

From: Andy Shevchenko <ext-andriy.shevchenko@xxxxxxxxx>

Get rid of own implementation of hex_to_bin().

Please note it requires to have hex_to_bin() introduced by one of previous
patch [1] which is not applied yet.

[1] http://patchwork.kernel.org/patch/80404/

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@xxxxxxxxx>
Cc: Tilman Schmidt <tilman@xxxxxxx>
---
 drivers/isdn/gigaset/capi.c |   13 +------------
 1 files changed, 1 insertions(+), 12 deletions(-)

diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index 83c4e2f..82ee085 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -169,17 +169,6 @@ static inline void ignore_cstruct_param(struct cardstate *cs, _cstruct param,
 }
 
 /*
- * convert hex to binary
- */
-static inline u8 hex2bin(char c)
-{
-	int result = c & 0x0f;
-	if (c & 0x40)
-		result += 9;
-	return result;
-}
-
-/*
  * convert an IE from Gigaset hex string to ETSI binary representation
  * including length byte
  * return value: result length, -1 on error
@@ -190,7 +179,7 @@ static int encode_ie(char *in, u8 *out, int maxlen)
 	while (*in) {
 		if (!isxdigit(in[0]) || !isxdigit(in[1]) || l >= maxlen)
 			return -1;
-		out[++l] = (hex2bin(in[0]) << 4) + hex2bin(in[1]);
+		out[++l] = (hex_to_bin(in[0]) << 4) + hex_to_bin(in[1]);
 		in += 2;
 	}
 	out[0] = l;
-- 
1.5.6.5

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