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fbdev: stifb: Make the STI next font pointer a 32-bit signed offset

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commit 8a32aa17c1cd48df1ddaa78e45abcb8c7a2220d6 upstream.

The pointer to the next STI font is actually a signed 32-bit
offset. With this change the 64-bit kernel will correctly subract
the (signed 32-bit) offset instead of adding a (unsigned 32-bit)
offset. It has no effect on 32-bit kernels.

This fixes the stifb driver with a 64-bit kernel on qemu.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Helge Deller 2023-10-27 13:36:48 +02:00 committed by Greg Kroah-Hartman
parent fcb32111f0
commit 5cadd78088
1 changed files with 1 additions and 1 deletions
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2
include/video/sticore.h
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@ -232,7 +232,7 @@ struct sti_rom_font {
u8 height;
u8 font_type; /* language type */
u8 bytes_per_char;
u32 next_font;
s32 next_font; /* note: signed int */
u8 underline_height;
u8 underline_pos;
u8 res008[2];