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[SLIP]: Simplify sl_free_bufs()

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We can avoid assignments to the local variable 'tmp' and 
actually get rid of tmp alltogether in sl_free_bufs(). This patch does 
that.  This is safe since both kfree() and slhc_free() handles NULL 
pointers gracefully.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesper Juhl 2005-06-23 21:06:56 -07:00 committed by David S. Miller
parent d675c989ed
commit 9b200b02a6
1 changed files with 4 additions and 10 deletions
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14
drivers/net/slip.c
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@ -198,18 +198,12 @@ sl_alloc_bufs(struct slip *sl, int mtu)
static void
sl_free_bufs(struct slip *sl)
{
void * tmp;
/* Free all SLIP frame buffers. */
tmp = xchg(&sl->rbuff, NULL);
kfree(tmp);
tmp = xchg(&sl->xbuff, NULL);
kfree(tmp);
kfree(xchg(&sl->rbuff, NULL));
kfree(xchg(&sl->xbuff, NULL));
#ifdef SL_INCLUDE_CSLIP
tmp = xchg(&sl->cbuff, NULL);
kfree(tmp);
if ((tmp = xchg(&sl->slcomp, NULL)) != NULL)
slhc_free(tmp);
kfree(xchg(&sl->cbuff, NULL));
slhc_free(xchg(&sl->slcomp, NULL));
#endif
}