This is a note to let you know that I've just added the patch titled
drm/ast: Fix DRAM init on AST2200
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:
drm-ast-fix-dram-init-on-ast2200.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.
>From 4cfe75f0f14f044dae66ad0e6eea812d038465d9 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@xxxxxxx>
Date: Wed, 21 Jun 2023 14:53:35 +0200
Subject: drm/ast: Fix DRAM init on AST2200
From: Thomas Zimmermann <tzimmermann@xxxxxxx>
commit 4cfe75f0f14f044dae66ad0e6eea812d038465d9 upstream.
Fix the test for the AST2200 in the DRAM initialization. The value
in ast->chip has to be compared against an enum constant instead of
a numerical value.
This bug got introduced when the driver was first imported into the
kernel.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Fixes: 312fec1405dd ("drm: Initial KMS driver for AST (ASpeed Technologies) 2000 series (v2)")
Cc: Dave Airlie <airlied@xxxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: <stable@xxxxxxxxxxxxxxx> # v3.5+
Reviewed-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
Reviewed-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx>
Tested-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx> # AST2600
Link: https://patchwork.freedesktop.org/patch/msgid/20230621130032.3568-2-tzimmermann@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/ast/ast_post.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/ast/ast_post.c
+++ b/drivers/gpu/drm/ast/ast_post.c
@@ -291,7 +291,7 @@ static void ast_init_dram_reg(struct drm
;
} while (ast_read32(ast, 0x10100) != 0xa8);
} else {/* AST2100/1100 */
- if (ast->chip == AST2100 || ast->chip == 2200)
+ if (ast->chip == AST2100 || ast->chip == AST2200)
dram_reg_info = ast2100_dram_table_data;
else
dram_reg_info = ast1100_dram_table_data;
Patches currently in stable-queue which might be from tzimmermann@xxxxxxx are
queue-5.15/backlight-gpio_backlight-compare-against-struct-fb_info.device.patch
queue-5.15/fbdev-ep93xx-fb-do-not-assign-to-struct-fb_info.dev.patch
queue-5.15/backlight-lv5207lp-compare-against-struct-fb_info.device.patch
queue-5.15/backlight-bd6107-compare-against-struct-fb_info.device.patch
queue-5.15/drm-ast-fix-dram-init-on-ast2200.patch
