linux.git/drivers/video, branch v5.19

fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()

2022-07-07T08:52:35+00:00

Use the fbcon_info_from_console() wrapper which was added to kernel
v5.19 with commit 409d6c95f9c6 ("fbcon: Introduce wrapper for console->fb_info lookup").

Signed-off-by: Helge Deller 
Reviewed-by: Geert Uytterhoeven

fbmem: Check virtual screen sizes in fb_set_var()

2022-07-07T08:52:21+00:00

Verify that the fbdev or drm driver correctly adjusted the virtual
screen sizes. On failure report the failing driver and reject the screen
size change.

Signed-off-by: Helge Deller 
Reviewed-by: Geert Uytterhoeven 
Cc: stable@vger.kernel.org # v5.4+

fbcon: Prevent that screen size is smaller than font size

2022-07-07T08:50:46+00:00

We need to prevent that users configure a screen size which is smaller than the
currently selected font size. Otherwise rendering chars on the screen will
access memory outside the graphics memory region.

This patch adds a new function fbcon_modechange_possible() which
implements this check and which later may be extended with other checks
if necessary.  The new function is called from the FBIOPUT_VSCREENINFO
ioctl handler in fbmem.c, which will return -EINVAL if userspace asked
for a too small screen size.

Signed-off-by: Helge Deller 
Reviewed-by: Geert Uytterhoeven 
Cc: stable@vger.kernel.org # v5.4+

fbcon: Disallow setting font bigger than screen size

2022-07-07T08:50:45+00:00

Prevent that users set a font size which is bigger than the physical screen.
It's unlikely this may happen (because screens are usually much larger than the
fonts and each font char is limited to 32x32 pixels), but it may happen on
smaller screens/LCD displays.

Signed-off-by: Helge Deller 
Reviewed-by: Daniel Vetter 
Reviewed-by: Geert Uytterhoeven 
Cc: stable@vger.kernel.org # v4.14+

fbdev: fbmem: Fix logo center image dx issue

2022-07-06T15:04:47+00:00

Image.dx gets wrong value because of missing '()'.

If xres == logo->width and n == 1, image.dx = -16.

Signed-off-by: Guiling Deng 
Fixes: 3d8b1933eb1c ("fbdev: fbmem: add config option to center the bootup logo")
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Helge Deller

Merge tag 'drm-misc-fixes-2022-06-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

2022-06-30T23:27:55+00:00

A NULL pointer dereference fix for vc4, and 3 patches to improve the
sysfb device behaviour when removing conflicting framebuffers

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20220630072404.2fa4z3nk5h5q34ci@houat

fbdev: Disable sysfb device registration when removing conflicting FBs

2022-06-29T07:51:50+00:00

The platform devices registered by sysfb match with firmware-based DRM or
fbdev drivers, that are used to have early graphics using a framebuffer
provided by the system firmware.

DRM or fbdev drivers later are probed and remove conflicting framebuffers,
leading to these platform devices for generic drivers to be unregistered.

But the current solution has a race, since the sysfb_init() function could
be called after a DRM or fbdev driver is probed and request to unregister
the devices for drivers with conflicting framebuffes.

To prevent this, disable any future sysfb platform device registration by
calling sysfb_disable(), if a driver requests to remove the conflicting
framebuffers.

Suggested-by: Daniel Vetter 
Signed-off-by: Javier Martinez Canillas 
Reviewed-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20220607182338.344270-4-javierm@redhat.com

Merge tag 'for-5.19/fbdev-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev

2022-06-26T16:13:51+00:00

Pull fbdev fixes from Helge Deller:
 "Two bug fixes for the pxa3xx and intelfb drivers:

   - pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write

   - intelfb: Initialize value of stolen size

  The other changes are small cleanups, simplifications and
  documentation updates to the cirrusfb, skeletonfb, omapfb,
  intelfb, au1100fb and simplefb drivers"

* tag 'for-5.19/fbdev-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  video: fbdev: omap: Remove duplicate 'the' in comment
  video: fbdev: omapfb: Align '*' in comment
  video: fbdev: simplefb: Check before clk_put() not needed
  video: fbdev: au1100fb: Drop unnecessary NULL ptr check
  video: fbdev: pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write
  video: fbdev: skeletonfb: Convert to generic power management
  video: fbdev: cirrusfb: Remove useless reference to PCI power management
  video: fbdev: intelfb: Initialize value of stolen size
  video: fbdev: intelfb: Use aperture size from pci_resource_len
  video: fbdev: skeletonfb: Fix syntax errors in comments

video: fbdev: omap: Remove duplicate 'the' in comment

2022-06-22T14:55:51+00:00

Signed-off-by: Jiang Jian 
Signed-off-by: Helge Deller

video: fbdev: omapfb: Align '*' in comment

2022-06-22T14:53:55+00:00

Consider '*' alignment in comments

Signed-off-by: Jiang Jian 
Signed-off-by: Helge Deller