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
Git-commit: 4cfe75f0f14f044dae66ad0e6eea812d038465d9
Patch-mainline: v6.6-rc1
References: bsc#1152446
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
Acked-by: Thomas Zimmermann <tzimmermann@suse.com>
---
drivers/gpu/drm/ast/ast_post.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
index a005aec18a020..0262aaafdb1c5 100644
--- 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_device *dev)
;
} 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;
--
2.42.0