linux-kernel - Re: [PATCH] drm/radeon: fix fb_div check in ni_init_smc_spll_table()

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Message-ID: <CADnq5_MK=DmiP4Y_AkEX3RL6dLDdoMOkyEYfrSu6H3OCE9jh+w@mail.gmail.com>
Date:   Tue, 23 Jun 2020 12:51:03 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Denis Efremov <efremov@...ux.com>
Cc:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "for 3.8" <stable@...r.kernel.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/radeon: fix fb_div check in ni_init_smc_spll_table()

On Mon, Jun 22, 2020 at 5:56 PM Denis Efremov <efremov@...ux.com> wrote:
>
> clk_s is checked twice in a row in ni_init_smc_spll_table().
> fb_div should be checked instead.
>
> Fixes: 69e0b57a91ad ("drm/radeon/kms: add dpm support for cayman (v5)")
> Cc: stable@...r.kernel.org
> Signed-off-by: Denis Efremov <efremov@...ux.com>

Applied.  Thanks!

Alex

> ---
>  drivers/gpu/drm/radeon/ni_dpm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c
> index b57c37ddd164..c7fbb7932f37 100644
> --- a/drivers/gpu/drm/radeon/ni_dpm.c
> +++ b/drivers/gpu/drm/radeon/ni_dpm.c
> @@ -2127,7 +2127,7 @@ static int ni_init_smc_spll_table(struct radeon_device *rdev)
>                 if (clk_s & ~(SMC_NISLANDS_SPLL_DIV_TABLE_CLKS_MASK >> SMC_NISLANDS_SPLL_DIV_TABLE_CLKS_SHIFT))
>                         ret = -EINVAL;
>
> -               if (clk_s & ~(SMC_NISLANDS_SPLL_DIV_TABLE_CLKS_MASK >> SMC_NISLANDS_SPLL_DIV_TABLE_CLKS_SHIFT))
> +               if (fb_div & ~(SMC_NISLANDS_SPLL_DIV_TABLE_FBDIV_MASK >> SMC_NISLANDS_SPLL_DIV_TABLE_FBDIV_SHIFT))
>                         ret = -EINVAL;
>
>                 if (clk_v & ~(SMC_NISLANDS_SPLL_DIV_TABLE_CLKV_MASK >> SMC_NISLANDS_SPLL_DIV_TABLE_CLKV_SHIFT))
> --
> 2.26.2
>
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> amd-gfx@...ts.freedesktop.org
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