Patch "drm/ast: Fix DRAM init on AST2200" has been added to the 5.4-stable tree

[<gregkh@linuxfoundation.org>]

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 5.4-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-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From 4cfe75f0f14f044dae66ad0e6eea812d038465d9 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Wed, 21 Jun 2023 14:53:35 +0200
Subject: drm/ast: Fix DRAM init on AST2200

From: Thomas Zimmermann <tzimmermann@suse.de>

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@suse.de>
Fixes: 312fec1405dd ("drm: Initial KMS driver for AST (ASpeed Technologies) 2000 series (v2)")
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v3.5+
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com> # AST2600
Link: https://patchwork.freedesktop.org/patch/msgid/20230621130032.3568-2-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 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
@@ -294,7 +294,7 @@ 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@suse.de are

queue-5.4/drm-fix-double-free-for-gbo-in-drm_gem_vram_init-and-drm_gem_vram_create.patch
queue-5.4/backlight-gpio_backlight-compare-against-struct-fb_info.device.patch
queue-5.4/fbdev-ep93xx-fb-do-not-assign-to-struct-fb_info.dev.patch
queue-5.4/backlight-lv5207lp-compare-against-struct-fb_info.device.patch
queue-5.4/backlight-bd6107-compare-against-struct-fb_info.device.patch
queue-5.4/drm-ast-fix-dram-init-on-ast2200.patch