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auxdisplay/cfag12864bfb: Use struct fb_info.screen_buffer

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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. This also gets
rid of casting needed due to not using the correct data type.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230428122452.4856-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-04-28 14:24:34 +02:00
parent 5aaa12873d
commit 11f373c3c1
1 changed files with 1 additions and 1 deletions
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2
drivers/auxdisplay/cfag12864bfb.c
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@ -72,7 +72,7 @@ static int cfag12864bfb_probe(struct platform_device *device)
if (!info)
goto none;
info->screen_base = (char __iomem *) cfag12864b_buffer;
info->screen_buffer = cfag12864b_buffer;
info->screen_size = CFAG12864B_SIZE;
info->fbops = &cfag12864bfb_ops;
info->fix = cfag12864bfb_fix;