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(-)