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authorJoe Perches <joe@perches.com>2009-11-04 10:26:13 +0000
committerDavid S. Miller <davem@davemloft.net>2009-11-08 00:43:19 -0800
commitf7a3a1d8affe563846fc17f0e7c0cc1500190c57 (patch)
tree40ae89d2dc8ba236706ed9d4f73abe78c90ad1a5 /net/appletalk
parentfd5c00276127661f12e0315e3bbec41a1c0be376 (diff)
downloadvexpress-lsk-f7a3a1d8affe563846fc17f0e7c0cc1500190c57.tar.gz
appletalk/ddp.c: Neaten checksum function
atalk_sum_partial can now use the rol16 function in bitops.h Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/appletalk')
-rw-r--r--net/appletalk/ddp.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 31fca64d17a..b631cc73454 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -922,13 +922,8 @@ static unsigned long atalk_sum_partial(const unsigned char *data,
{
/* This ought to be unwrapped neatly. I'll trust gcc for now */
while (len--) {
- sum += *data;
- sum <<= 1;
- if (sum & 0x10000) {
- sum++;
- sum &= 0xffff;
- }
- data++;
+ sum += *data++;
+ sum = rol16(sum, 1);
}
return sum;
}