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fbdev: viafb: use new array-copying-wrapper

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viafbdev.c utilizes memdup_user() to copy an array from userspace.

There is a new wrapper, specifically designed for copying arrays. Use
this one instead.

Suggested-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Philipp Stanner
2023-11-02 20:24:03 +01:00
committed by Helge Deller
parent fc6699d62f
commit 3e91a38de1
1 changed files with 1 additions and 1 deletions
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2
drivers/video/fbdev/via/viafbdev.c
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@ -574,7 +574,7 @@ static int viafb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
break; break;
case VIAFB_SET_GAMMA_LUT: case VIAFB_SET_GAMMA_LUT:
viafb_gamma_table = memdup_user(argp, 256 * sizeof(u32)); viafb_gamma_table = memdup_array_user(argp, 256, sizeof(u32));
if (IS_ERR(viafb_gamma_table)) if (IS_ERR(viafb_gamma_table))
return PTR_ERR(viafb_gamma_table); return PTR_ERR(viafb_gamma_table);
viafb_set_gamma_table(viafb_bpp, viafb_gamma_table); viafb_set_gamma_table(viafb_bpp, viafb_gamma_table);