[PATCH 5.15 57/67] fbdev: stifb: Make the STI next font pointer a 32-bit signed offset

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Helge Deller <deller@xxxxxx>

[ 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>
---
 drivers/video/fbdev/sticore.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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];
-- 
2.42.0







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