Commit 4eb5dc3b authored Oct 27, 2023 by Helge Deller Committed by Greg Kroah-Hartman Dec 08, 2023

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



[ Upstream commit 8a32aa17c1cd48df1ddaa78e45abcb8c7a2220d6 ]

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: Sasha Levin <sashal@kernel.org>

parent e6771a83

drivers/video/fbdev/sticore.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -237,7 +237,7 @@ 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];