linux-kernel - Re: [PATCH -next] soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx

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Message-ID: <CADRPPNSph1VrSgM-_p+in0GqzXi5AKrxCf4SamYmAfB3FOy0Eg@mail.gmail.com>
Date:   Tue, 22 Sep 2020 18:25:46 -0500
From:   Li Yang <leoyang.li@....com>
To:     Wang Hai <wanghai38@...wei.com>
Cc:     Zhao Qiang <qiang.zhao@....com>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk

On Tue, Aug 4, 2020 at 9:04 AM Wang Hai <wanghai38@...wei.com> wrote:
>
> Fix smatch warning:
>
> drivers/soc/fsl/qe/ucc.c:526
>  ucc_set_tdm_rxtx_clk() warn: unsigned 'tdm_num' is never less than zero.
>
> 'tdm_num' is u32 type, never less than zero.
>
> Signed-off-by: Wang Hai <wanghai38@...wei.com>

Applied for next.  Thanks.

> ---
>  drivers/soc/fsl/qe/ucc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/soc/fsl/qe/ucc.c b/drivers/soc/fsl/qe/ucc.c
> index cac0fb7693a0..21dbcd787cd5 100644
> --- a/drivers/soc/fsl/qe/ucc.c
> +++ b/drivers/soc/fsl/qe/ucc.c
> @@ -523,7 +523,7 @@ int ucc_set_tdm_rxtx_clk(u32 tdm_num, enum qe_clock clock,
>
>         qe_mux_reg = &qe_immr->qmx;
>
> -       if (tdm_num > 7 || tdm_num < 0)
> +       if (tdm_num > 7)
>                 return -EINVAL;
>
>         /* The communications direction must be RX or TX */
> --
> 2.17.1
>