From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Lamparter Date: Mon, 18 Feb 2019 16:04:49 +0000 Subject: Re: [PATCH] carl9170: clean up a clamp() call Message-Id: <2108216.StK4OeqmAv@debian64> List-Id: References: <20190218093154.GC7712@kadam> In-Reply-To: <20190218093154.GC7712@kadam> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dan Carpenter Cc: Christian Lamparter , Kalle Valo , linux-wireless@vger.kernel.org, kernel-janitors@vger.kernel.org On Monday, February 18, 2019 10:31:54 AM CET Dan Carpenter wrote: > The parameter order for clamp is supposed to be clamp(value, low, high). > When we write it in this order it's equivalent to > min(head->plcp[3] & 0x7f, 75) which works in this context where the min > is zero. But it's not a correct use of the API. > > Signed-off-by: Dan Carpenter Acked-by: Christian Lamparter > --- > drivers/net/wireless/ath/carl9170/rx.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c > index f7c2f19e81c1..8e154f6364a3 100644 > --- a/drivers/net/wireless/ath/carl9170/rx.c > +++ b/drivers/net/wireless/ath/carl9170/rx.c > @@ -427,7 +427,7 @@ static int carl9170_rx_mac_status(struct ar9170 *ar, > if (head->plcp[6] & 0x80) > status->enc_flags |= RX_ENC_FLAG_SHORT_GI; > > - status->rate_idx = clamp(0, 75, head->plcp[3] & 0x7f); > + status->rate_idx = clamp(head->plcp[3] & 0x7f, 0, 75); > status->encoding = RX_ENC_HT; > break; > >