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net: can: remove custom hex_to_bin() 

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Shevchenko 2011-07-17 22:26:37 +00:00 committed by David S. Miller
parent 61b8013a11
commit 81fc70d865
1 changed files with 5 additions and 21 deletions
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26
drivers/net/can/slcan.c
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@ -56,6 +56,7 @@
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/can.h>
static __initdata const char banner[] =
@ -142,21 +143,6 @@ static struct net_device **slcan_devs;
* STANDARD SLCAN DECAPSULATION *
************************************************************************/
static int asc2nibble(char c)
{
if ((c >= '0') && (c <= '9'))
return c - '0';
if ((c >= 'A') && (c <= 'F'))
return c - 'A' + 10;
if ((c >= 'a') && (c <= 'f'))
return c - 'a' + 10;
return 16; /* error */
}
/* Send one completely decapsulated can_frame to the network layer */
static void slc_bump(struct slcan *sl)
{
@ -195,18 +181,16 @@ static void slc_bump(struct slcan *sl)
*(u64 *) (&cf.data) = 0; /* clear payload */
for (i = 0, dlc_pos++; i < cf.can_dlc; i++) {
tmp = asc2nibble(sl->rbuff[dlc_pos++]);
if (tmp > 0x0F)
tmp = hex_to_bin(sl->rbuff[dlc_pos++]);
if (tmp < 0)
return;
cf.data[i] = (tmp << 4);
tmp = asc2nibble(sl->rbuff[dlc_pos++]);
if (tmp > 0x0F)
tmp = hex_to_bin(sl->rbuff[dlc_pos++]);
if (tmp < 0)
return;
cf.data[i] |= tmp;
}
skb = dev_alloc_skb(sizeof(struct can_frame));
if (!skb)
return;