linux/drivers/video
Thomas Zimmermann 3f8974f68f fbdev: Validate info->screen_{base, buffer} in fb_ops implementations
Push the test for info->screen_base from fb_read() and fb_write() into
the implementations of struct fb_ops.{fb_read,fb_write}. In cases where
the driver operates on info->screen_buffer, test this field instead.

While bothi fields, screen_base and screen_buffer, are stored in the
same location, they refer to different address spaces. For correctness,
we want to test each field in exactly the code that uses it.

v2:
	* also test screen_base in pvr2fb (Geert)
	* also test screen_buffer in ivtvfb, arcfb, broadsheetfb,
	  hecubafb, metronomefb and ssd1307fb (Geert)
	* give a rational for the change (Geert)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Sui Jingfeng <suijingfeng@loongson.cn>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230428122452.4856-18-tzimmermann@suse.de
2023-05-08 15:28:34 +02:00
..
backlight - New Drivers 2023-02-23 15:06:28 -08:00
console video: Move HP PARISC STI core code to shared location 2023-04-20 10:04:51 +02:00
fbdev fbdev: Validate info->screen_{base, buffer} in fb_ops implementations 2023-05-08 15:28:34 +02:00
logo drivers: video: logo: add SPDX comment, remove GPL notice in pnmtologo.c 2023-03-14 18:49:39 +01:00
aperture.c video/aperture: Provide a VGA helper for gma500 and internal use 2023-04-16 14:18:10 +02:00
cmdline.c fbdev: Handle video= parameter in video/cmdline.c 2023-02-20 14:56:48 +01:00
display_timing.c
hdmi.c video/hdmi: Add audio_infoframe packing for DP 2022-09-04 15:31:59 +03:00
Kconfig video: Move HP PARISC STI core code to shared location 2023-04-20 10:04:51 +02:00
Makefile video: Move HP PARISC STI core code to shared location 2023-04-20 10:04:51 +02:00
nomodeset.c drm: Move nomodeset kernel parameter to drivers/video 2022-11-16 13:26:12 +01:00
of_display_timing.c video: fbdev: of: display_timing: Remove a redundant zeroing of memory 2022-04-04 08:55:23 +02:00
of_videomode.c
sticore.c arch/parisc: Implement fb_is_primary_device() under arch/parisc 2023-04-20 10:04:58 +02:00
vgastate.c
videomode.c