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fbdev/deferred-io: Test screen_buffer for vmalloc'ed memory

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Framebuffers in virtual memory are available via screen_buffer. Use
it instead of screen_base and avoid the type casting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-5-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2024-04-19 10:28:57 +02:00
parent 28aea43c70
commit abc79a0e0a
1 changed files with 3 additions and 3 deletions
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drivers/video/fbdev/core/fb_defio.c
+3 -3
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@@ -25,11 +25,11 @@
static struct page *fb_deferred_io_page(struct fb_info *info, unsigned long offs)
{
void *screen_base = (void __force *) info->screen_base;
const void *screen_buffer = info->screen_buffer;
struct page *page;
if (is_vmalloc_addr(screen_base + offs))
page = vmalloc_to_page(screen_base + offs);
if (is_vmalloc_addr(screen_buffer + offs))
page = vmalloc_to_page(screen_buffer + offs);
else
page = pfn_to_page((info->fix.smem_start + offs) >> PAGE_SHIFT);