From: Melissa Wen <mwen@igalia.com>
To: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, emma@anholt.net
Subject: Re: [PATCH] drm/v3d/v3d_drv: Check for error num after setting mask
Date: Sun, 9 Jan 2022 16:34:27 -0100 [thread overview]
Message-ID: <20220109173349.m4aug62q7e232r5r@mail.igalia.com> (raw)
In-Reply-To: <20220106101757.4sd7d3nvoeatjzuq@mail.igalia.com>
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On 01/06, Melissa Wen wrote:
> On 01/06, Jiasheng Jiang wrote:
> > Because of the possible failure of the dma_supported(), the
> > dma_set_mask_and_coherent() may return error num.
> > Therefore, it should be better to check it and return the error if
> > fails.
> >
> > Fixes: 334dd38a3878 ("drm/v3d: Set dma_mask as well as coherent_dma_mask")
> > Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
> > ---
> > drivers/gpu/drm/v3d/v3d_drv.c | 5 ++++-
> > 1 file changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
> > index 99e22beea90b..bedd52195723 100644
> > --- a/drivers/gpu/drm/v3d/v3d_drv.c
> > +++ b/drivers/gpu/drm/v3d/v3d_drv.c
> > @@ -232,8 +232,11 @@ static int v3d_platform_drm_probe(struct platform_device *pdev)
> > return ret;
> >
> > mmu_debug = V3D_READ(V3D_MMU_DEBUG_INFO);
> > - dma_set_mask_and_coherent(dev,
> > + ret = dma_set_mask_and_coherent(dev,
> > DMA_BIT_MASK(30 + V3D_GET_FIELD(mmu_debug, V3D_MMU_PA_WIDTH)));
> > + if (ret)
> > + return ret;
> > +
> lgtm, thanks!
>
Checkpatch complains when I was about to apply this change.
As the current code already has an alignment issue, here is a good
opportunity to clean it properly. I suggest to create a variable for
the mask to solve this parenthesis alignment issue.
When submitting the next version, add my r-b, please.
Thanks, Melissa
> Reviewed-by: Melissa Wen <mwen@igalia.com>
>
> > v3d->va_width = 30 + V3D_GET_FIELD(mmu_debug, V3D_MMU_VA_WIDTH);
> >
> > ident1 = V3D_READ(V3D_HUB_IDENT1);
> > --
> > 2.25.1
> >
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prev parent reply other threads:[~2022-01-09 17:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-06 2:55 [PATCH] drm/v3d/v3d_drv: Check for error num after setting mask Jiasheng Jiang
2022-01-06 10:17 ` Melissa Wen
2022-01-09 17:34 ` Melissa Wen [this message]
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