RE: [PATCH] wifi:mac80211: Replace the ternary conditional operator with max()

From: Ping-Ke Shih
Date: Tue Jun 27 2023 - 21:49:46 EST




> -----Original Message-----
> From: You Kangren <youkangren@xxxxxxxx>
> Sent: Monday, June 26, 2023 6:48 PM
> To: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>; David S. Miller <davem@xxxxxxxxxxxxx>; Eric Dumazet
> <edumazet@xxxxxxxxxx>; Jakub Kicinski <kuba@xxxxxxxxxx>; Paolo Abeni <pabeni@xxxxxxxxxx>; open
> list:MAC80211 <linux-wireless@xxxxxxxxxxxxxxx>; open list:NETWORKING [GENERAL] <netdev@xxxxxxxxxxxxxxx>;
> open list <linux-kernel@xxxxxxxxxxxxxxx>
> Cc: opensource.kernel@xxxxxxxx; youkangren@xxxxxxxx
> Subject: [PATCH] wifi:mac80211: Replace the ternary conditional operator with max()

The semicolon of "wifi:" is different from others.

>
> Replace the ternary conditional operator with max() to make the code clean
>
> Signed-off-by: You Kangren <youkangren@xxxxxxxx>
> ---
> net/mac80211/tdls.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
> index a4af3b7675ef..9f8b0842a616 100644
> --- a/net/mac80211/tdls.c
> +++ b/net/mac80211/tdls.c
> @@ -946,7 +946,7 @@ ieee80211_tdls_build_mgmt_packet_data(struct ieee80211_sub_if_data *sdata,
> int ret;
> struct ieee80211_link_data *link;
>
> - link_id = link_id >= 0 ? link_id : 0;
> + link_id = max(link_id, 0);

Original logic means "if link_id < 0, then use default link (0)" instead of
"always use link_id larger than or equal to 0". So, I think max(link_id, 0) could
cause misunderstanding.

> rcu_read_lock();
> link = rcu_dereference(sdata->link[link_id]);
> if (WARN_ON(!link))
> --
> 2.39.0
>
>
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