Re: [PATCH v2] vgem: fix error return in vgem_init()

From: Markus Elfring
Date: Fri Oct 03 2025 - 10:42:46 EST


> The dma_coerce_mask_and_coherent function may
> fail to apply a mask due to incorrectly passed parameters.


* You may occasionally put more than 61 characters into text lines
of such a change description.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.17#n658

* Would you like to choose another imperative wording?

* How do you think about to add any tags (like “Fixes” and “Cc”) accordingly?



> ---
> drivers/gpu/drm/vgem/vgem_drv.c | 4 +++-


Some contributors would appreciate patch version descriptions.
https://lore.kernel.org/all/?q=%22This+looks+like+a+new+version+of+a+previously+submitted+patch%22



> +++ b/drivers/gpu/drm/vgem/vgem_drv.c
> @@ -140,8 +140,10 @@ static int __init vgem_init(void)
> goto out_unregister;
> }
>
> - dma_coerce_mask_and_coherent(&pdev->dev,
> + ret = dma_coerce_mask_and_coherent(&pdev->dev,
> DMA_BIT_MASK(64));
> + if (ret)
> + goto out_unregister;


I suggest to keep the passed parameters in the same line for this function call.

Regards,
Markus