Re: [PATCH 10/10] drm/fbdev-generic: Rename struct fb_info 'fbi' to 'info'

Sam Ravnborg
2023-01-23T21:07:12Z

Hi Thomas,

a quick drive-by comment.

On Mon, Jan 23, 2023 at 11:05:59AM +0100, Thomas Zimmermann wrote:
> The generic fbdev emulation names variables of type struct fb_info
> both 'fbi' and 'info'. The latter seems to be more common in fbdev
> code, so name fbi accordingly.
>
> Also replace the duplicate variable in drm_fbdev_fb_destroy().
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> ---
> drivers/gpu/drm/drm_fbdev_generic.c | 49 ++++++++++++++---------------
> 1 file changed, 24 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_fbdev_generic.c b/drivers/gpu/drm/drm_fbdev_generic.c
> index 49a0bba86ce7..7633da5c13c3 100644
> --- a/drivers/gpu/drm/drm_fbdev_generic.c
> +++ b/drivers/gpu/drm/drm_fbdev_generic.c
> @@ -46,17 +46,16 @@ static int drm_fbdev_fb_release(struct fb_info *info, int user)
> static void drm_fbdev_fb_destroy(struct fb_info *info)
> {
> struct drm_fb_helper *fb_helper = info->par;
> - struct fb_info *fbi = fb_helper->info;
> void *shadow = NULL;
>
> if (!fb_helper->dev)
> return;
>
> - if (fbi) {
> - if (fbi->fbdefio)
> - fb_deferred_io_cleanup(fbi);
> + if (info) {
As info is already used above to find fb_helper, this check is
redundant.

Sam

> + if (info->fbdefio)
> + fb_deferred_io_cleanup(info);
> if (drm_fbdev_use_shadow_fb(fb_helper))
> - shadow = fbi->screen_buffer;
> + shadow = info->screen_buffer;
> }
>
> drm_fb_helper_fini(fb_helper);
> @@ -173,7 +172,7 @@ static int drm_fbdev_fb_probe(struct drm_fb_helper *fb_helper,
> struct drm_device *dev = fb_helper->dev;
> struct drm_client_buffer *buffer;
> struct drm_framebuffer *fb;
> - struct fb_info *fbi;
> + struct fb_info *info;
> u32 format;
> struct iosys_map map;
> int ret;
> @@ -192,35 +191,35 @@ static int drm_fbdev_fb_probe(struct drm_fb_helper *fb_helper,
> fb_helper->fb = buffer->fb;
> fb = buffer->fb;
>
> - fbi = drm_fb_helper_alloc_info(fb_helper);
> - if (IS_ERR(fbi))
> - return PTR_ERR(fbi);
> + info = drm_fb_helper_alloc_info(fb_helper);
> + if (IS_ERR(info))
> + return PTR_ERR(info);
>
> - fbi->fbops = &drm_fbdev_fb_ops;
> - fbi->screen_size = sizes->surface_height * fb->pitches[0];
> - fbi->fix.smem_len = fbi->screen_size;
> - fbi->flags = FBINFO_DEFAULT;
> + info->fbops = &drm_fbdev_fb_ops;
> + info->screen_size = sizes->surface_height * fb->pitches[0];
> + info->fix.smem_len = info->screen_size;
> + info->flags = FBINFO_DEFAULT;
>
> - drm_fb_helper_fill_info(fbi, fb_helper, sizes);
> + drm_fb_helper_fill_info(info, fb_helper, sizes);
>
> if (drm_fbdev_use_shadow_fb(fb_helper)) {
> - fbi->screen_buffer = vzalloc(fbi->screen_size);
> - if (!fbi->screen_buffer)
> + info->screen_buffer = vzalloc(info->screen_size);
> + if (!info->screen_buffer)
> return -ENOMEM;
> - fbi->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
> + info->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
>
> - fbi->fbdefio = &drm_fbdev_defio;
> - fb_deferred_io_init(fbi);
> + info->fbdefio = &drm_fbdev_defio;
> + fb_deferred_io_init(info);
> } else {
> /* buffer is mapped for HW framebuffer */
> ret = drm_client_buffer_vmap(fb_helper->buffer, &map);
> if (ret)
> return ret;
> if (map.is_iomem) {
> - fbi->screen_base = map.vaddr_iomem;
> + info->screen_base = map.vaddr_iomem;
> } else {
> - fbi->screen_buffer = map.vaddr;
> - fbi->flags |= FBINFO_VIRTFB;
> + info->screen_buffer = map.vaddr;
> + info->flags |= FBINFO_VIRTFB;
> }
>
> /*
> @@ -229,10 +228,10 @@ static int drm_fbdev_fb_probe(struct drm_fb_helper *fb_helper,
> * case.
> */
> #if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
> - if (fb_helper->hint_leak_smem_start && fbi->fix.smem_start == 0 &&
> + if (fb_helper->hint_leak_smem_start && info->fix.smem_start == 0 &&
> !drm_WARN_ON_ONCE(dev, map.is_iomem))
> - fbi->fix.smem_start =
> - page_to_phys(virt_to_page(fbi->screen_buffer));
> + info->fix.smem_start =
> + page_to_phys(virt_to_page(info->screen_buffer));
> #endif
> }
>
> --
> 2.39.0