This is a note to let you know that I've just added the patch titled
fbdev: stifb: Make the STI next font pointer a 32-bit signed offset
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fbdev-stifb-make-the-sti-next-font-pointer-a-32-bit-.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d6bdef383a27b21178c26e44b13838e41d078acc
Author: Helge Deller <deller@xxxxxx>
Date: Fri Oct 27 13:36:48 2023 +0200
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@xxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/video/fbdev/sticore.h b/drivers/video/fbdev/sticore.h
index 0ebdd28a0b813..d83ab3ded5f3d 100644
--- a/drivers/video/fbdev/sticore.h
+++ b/drivers/video/fbdev/sticore.h
@@ -231,7 +231,7 @@ 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];
