linux-kernel - [PATCH 0/7] Fix divide errors in fbdev drivers

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Date:   Mon,  4 Apr 2022 16:47:16 +0800
From:   Zheyu Ma <zheyuma97@...il.com>
To:     deller@....de
Cc:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Zheyu Ma <zheyuma97@...il.com>
Subject: [PATCH 0/7] Fix divide errors in fbdev drivers

None of these framebuffer drivers checks for 'pixclock', leading to many
divide errors, which we fix by checking the value of 'pixclock' in
*_check_var(). As discussed before, it is better to keep the check per
driver rather than in the caller.

https://lore.kernel.org/all/YPgbHMtLQqb1kP0l@ravnborg.org/

Zheyu Ma (7):
  video: fbdev: i740fb: Error out if 'pixclock' equals zero
  video: fbdev: neofb: Fix the check of 'var->pixclock'
  video: fbdev: kyro: Error out if 'lineclock' equals zero
  video: fbdev: vt8623fb: Error out if 'pixclock' equals zero
  video: fbdev: tridentfb: Error out if 'pixclock' equals zero
  video: fbdev: arkfb: Error out if 'pixclock' equals zero
  video: fbdev: s3fb: Error out if 'pixclock' equals zero

 drivers/video/fbdev/arkfb.c      | 3 +++
 drivers/video/fbdev/i740fb.c     | 3 +++
 drivers/video/fbdev/kyro/fbdev.c | 2 ++
 drivers/video/fbdev/neofb.c      | 2 +-
 drivers/video/fbdev/s3fb.c       | 3 +++
 drivers/video/fbdev/tridentfb.c  | 3 +++
 drivers/video/fbdev/vt8623fb.c   | 3 +++
 7 files changed, 18 insertions(+), 1 deletion(-)

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2.25.1