linux-kernel - Re: [PATCH v2 02/26] media: stb0899: Simplify check

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Message-ID: <ae9b190c-3961-4704-bc93-cb1c4182672b@linaro.org>
Date: Sun, 21 Apr 2024 00:07:55 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Ricardo Ribalda <ribalda@...omium.org>,
 Martin Tuma <martin.tuma@...iteqautomotive.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Hugues Fruchet <hugues.fruchet@...s.st.com>,
 Alain Volmat <alain.volmat@...s.st.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Chen-Yu Tsai
 <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>,
 Samuel Holland <samuel@...lland.org>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>,
 Thierry Reding <thierry.reding@...il.com>,
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 Sowjanya Komatineni <skomatineni@...dia.com>,
 Luca Ceresoli <luca.ceresoli@...tlin.com>,
 Matthias Brugger <matthias.bgg@...il.com>,
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 Hans Verkuil <hverkuil@...all.nl>, Sergey Kozlov <serjk@...up.ru>,
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 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, linux-staging@...ts.linux.dev,
 linux-sunxi@...ts.linux.dev, linux-tegra@...r.kernel.org,
 linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 02/26] media: stb0899: Simplify check

On 19/04/2024 10:47, Ricardo Ribalda wrote:
> chip_id is an unsigned number, it can never be < 0
> 
> Fixes cocci check:
> drivers/media/dvb-frontends/stb0899_drv.c:1280:8-15: WARNING: Unsigned expression compared with zero: chip_id > 0
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
> ---
>   drivers/media/dvb-frontends/stb0899_drv.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/dvb-frontends/stb0899_drv.c b/drivers/media/dvb-frontends/stb0899_drv.c
> index 2f4d8fb400cd..35634f9a8ab5 100644
> --- a/drivers/media/dvb-frontends/stb0899_drv.c
> +++ b/drivers/media/dvb-frontends/stb0899_drv.c
> @@ -1277,7 +1277,7 @@ static int stb0899_get_dev_id(struct stb0899_state *state)
>   	dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
>   	CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
>   	fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
> -	if (! (chip_id > 0)) {
> +	if (!chip_id) {
>   		dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
>   
>   		return -ENODEV;
> 

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>