Re: [PATCH net] ethernet: xircom: small clean up in setup_xirc2ps_cs()

On Mon, Aug 21, 2017 at 02:52:34PM +0000, David Laight wrote:

From: Dan Carpenter

quoted

Sent: 21 August 2017 10:48
The get_options() function takes the whole ARRAY_SIZE().  It doesn't
matter here because we don't use more than 7 elements.

Signed-off-by: Dan Carpenter <redacted>

diff --git a/drivers/net/ethernet/xircom/xirc2ps_cs.c b/drivers/net/ethernet/xircom/xirc2ps_cs.c
index f71883264cc0..fd5288ff53b5 100644
--- a/drivers/net/ethernet/xircom/xirc2ps_cs.c
+++ b/drivers/net/ethernet/xircom/xirc2ps_cs.c

@@ -1781,7 +1781,7 @@ static int __init setup_xirc2ps_cs(char *str)
 	 */
 	int ints[10] = { -1 };

-	str = get_options(str, 9, ints);
+	str = get_options(str, ARRAY_SIZE(ints), ints);

 #define MAYBE_SET(X,Y) if (ints[0] >= Y && ints[Y] != -1) { X = ints[Y]; }
 	MAYBE_SET(if_port, 3);

That code looks very dubious to me.
It looks as though it expects all of the ints[] array to be initialised
to -1, not just the first element.

I'm pretty sure you're right and I thought about changing it when I sent
the patch but it doesn't matter.  It's not required to initialize that
code anyway because either get_options() will initialize it or it won't
be used.

regards,
dan carpenter