linux-kernel - Re: [PATCH 13/55] staging: wfx: avoid double warning when no more tx policy are available

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Date:   Fri, 3 Jan 2020 12:21:16 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Jérôme Pouiller <Jerome.Pouiller@...abs.com>
Cc:     "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S . Miller" <davem@...emloft.net>,
        Kalle Valo <kvalo@...eaurora.org>
Subject: Re: [PATCH 13/55] staging: wfx: avoid double warning when no more tx
 policy are available

On Mon, Dec 16, 2019 at 05:03:40PM +0000, Jérôme Pouiller wrote:
> From: Jérôme Pouiller <jerome.pouiller@...abs.com>
> 
> Currently, number of available tx retry policies is checked two times.
> Only one is sufficient.
> 
> Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
> ---
>  drivers/staging/wfx/data_tx.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
> index 32e269becd75..c9dea627661f 100644
> --- a/drivers/staging/wfx/data_tx.c
> +++ b/drivers/staging/wfx/data_tx.c
> @@ -169,7 +169,8 @@ static int wfx_tx_policy_get(struct wfx_vif *wvif,
>  	wfx_tx_policy_build(wvif, &wanted, rates);
>  
>  	spin_lock_bh(&cache->lock);
> -	if (WARN_ON(list_empty(&cache->free))) {
> +	if (list_empty(&cache->free)) {
> +		WARN(1, "unable to get a valid Tx policy");
>  		spin_unlock_bh(&cache->lock);
>  		return WFX_INVALID_RATE_ID;

This warning is more clear than the original which is good, but that's
not what the commit message says.  How does this fix a double warning?

regards,
dan carpenter