Re: [PATCH v2] drm/amd/amdgpu: cleanup coding style a bit

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On Thu, May 7, 2020 at 5:22 AM Christian König <christian.koenig@xxxxxxx> wrote:
>
> Am 07.05.20 um 11:13 schrieb Bernard Zhao:
> > There is DEVICE_ATTR mechanism in separate attribute define.
> > So this change is to use attr array, also use
> > sysfs_create_files in init function & sysfs_remove_files in
> > fini function.
> > This maybe make the code a bit readable.
> >
> > Signed-off-by: Bernard Zhao <bernard@xxxxxxxx>
>
> Reviewed-by: Christian König <christian.koenig@xxxxxxx>
>

Applied with a minor change to make the array const to fix the build.

Alex

> >
> > Changes since V1:
> > *Use DEVICE_ATTR mechanism
> >
> > Link for V1:
> > *https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fpatchwork%2Fpatch%2F1228076%2F&amp;data=02%7C01%7Cchristian.koenig%40amd.com%7C073b9043be5346b3c90c08d7f266e6fb%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637244396096735223&amp;sdata=PjFsYvmw2pvVisZ6TzMqOyoSr0m3DsFN%2F0q%2B%2FfBxACg%3D&amp;reserved=0
> > ---
> >   drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 43 ++++++--------------
> >   1 file changed, 13 insertions(+), 30 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> > index 82a3299e53c0..57bbc70662ff 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> > @@ -148,6 +148,15 @@ static DEVICE_ATTR(mem_info_vis_vram_used, S_IRUGO,
> >   static DEVICE_ATTR(mem_info_vram_vendor, S_IRUGO,
> >                  amdgpu_mem_info_vram_vendor, NULL);
> >
> > +static struct attribute *amdgpu_vram_mgr_attributes[] = {
> > +     &dev_attr_mem_info_vram_total.attr,
> > +     &dev_attr_mem_info_vis_vram_total.attr,
> > +     &dev_attr_mem_info_vram_used.attr,
> > +     &dev_attr_mem_info_vis_vram_used.attr,
> > +     &dev_attr_mem_info_vram_vendor.attr,
> > +     NULL
> > +};
> > +
> >   /**
> >    * amdgpu_vram_mgr_init - init VRAM manager and DRM MM
> >    *
> > @@ -172,31 +181,9 @@ static int amdgpu_vram_mgr_init(struct ttm_mem_type_manager *man,
> >       man->priv = mgr;
> >
> >       /* Add the two VRAM-related sysfs files */
> > -     ret = device_create_file(adev->dev, &dev_attr_mem_info_vram_total);
> > -     if (ret) {
> > -             DRM_ERROR("Failed to create device file mem_info_vram_total\n");
> > -             return ret;
> > -     }
> > -     ret = device_create_file(adev->dev, &dev_attr_mem_info_vis_vram_total);
> > -     if (ret) {
> > -             DRM_ERROR("Failed to create device file mem_info_vis_vram_total\n");
> > -             return ret;
> > -     }
> > -     ret = device_create_file(adev->dev, &dev_attr_mem_info_vram_used);
> > -     if (ret) {
> > -             DRM_ERROR("Failed to create device file mem_info_vram_used\n");
> > -             return ret;
> > -     }
> > -     ret = device_create_file(adev->dev, &dev_attr_mem_info_vis_vram_used);
> > -     if (ret) {
> > -             DRM_ERROR("Failed to create device file mem_info_vis_vram_used\n");
> > -             return ret;
> > -     }
> > -     ret = device_create_file(adev->dev, &dev_attr_mem_info_vram_vendor);
> > -     if (ret) {
> > -             DRM_ERROR("Failed to create device file mem_info_vram_vendor\n");
> > -             return ret;
> > -     }
> > +     ret = sysfs_create_files(&adev->dev->kobj, amdgpu_vram_mgr_attributes);
> > +     if (ret)
> > +             DRM_ERROR("Failed to register sysfs\n");
> >
> >       return 0;
> >   }
> > @@ -219,11 +206,7 @@ static int amdgpu_vram_mgr_fini(struct ttm_mem_type_manager *man)
> >       spin_unlock(&mgr->lock);
> >       kfree(mgr);
> >       man->priv = NULL;
> > -     device_remove_file(adev->dev, &dev_attr_mem_info_vram_total);
> > -     device_remove_file(adev->dev, &dev_attr_mem_info_vis_vram_total);
> > -     device_remove_file(adev->dev, &dev_attr_mem_info_vram_used);
> > -     device_remove_file(adev->dev, &dev_attr_mem_info_vis_vram_used);
> > -     device_remove_file(adev->dev, &dev_attr_mem_info_vram_vendor);
> > +     sysfs_remove_files(&adev->dev->kobj, amdgpu_vram_mgr_attributes);
> >       return 0;
> >   }
> >
>
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