| Message ID | 20230428122452.4856-14-tzimmermann@suse.de |
|---|---|
| State | New |
| Headers | show |
| Series | drm,fbdev: Use fbdev's I/O helpers | expand |
Thomas Zimmermann <tzimmermann@suse.de> writes: > Use info->screen_buffer when reading and writing framebuffers in > system memory. It's the correct pointer for this address space. > > The struct fb_info has a union to store the framebuffer memory. This can > either be info->screen_base if the framebuffer is stored in I/O memory, > or info->screen_buffer if the framebuffer is stored in system memory. > > As the driver operates on the latter address space, it is wrong to use > .screen_base and .screen_buffer must be used instead. > > Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> > --- Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
diff --git a/drivers/video/fbdev/xen-fbfront.c b/drivers/video/fbdev/xen-fbfront.c index d7f3e6281ce4..9b2a786621a6 100644 --- a/drivers/video/fbdev/xen-fbfront.c +++ b/drivers/video/fbdev/xen-fbfront.c @@ -429,7 +429,7 @@ static int xenfb_probe(struct xenbus_device *dev, fb_info->pseudo_palette = fb_info->par; fb_info->par = info; - fb_info->screen_base = info->fb; + fb_info->screen_buffer = info->fb; fb_info->fbops = &xenfb_fb_ops; fb_info->var.xres_virtual = fb_info->var.xres = video[KPARAM_WIDTH];
Use info->screen_buffer when reading and writing framebuffers in system memory. It's the correct pointer for this address space. The struct fb_info has a union to store the framebuffer memory. This can either be info->screen_base if the framebuffer is stored in I/O memory, or info->screen_buffer if the framebuffer is stored in system memory. As the driver operates on the latter address space, it is wrong to use .screen_base and .screen_buffer must be used instead. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> --- drivers/video/fbdev/xen-fbfront.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)