linux-kernel - [PATCH 3.16 221/305] drm/ast: fixed cursor may disappear sometimes

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Date:   Sun, 03 Feb 2019 14:45:08 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Dave Airlie" <airlied@...hat.com>,
        "Y.C. Chen" <yc_chen@...eedtech.com>
Subject: [PATCH 3.16 221/305] drm/ast: fixed cursor may disappear sometimes

3.16.63-rc1 review patch.  If anyone has any objections, please let me know.

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

From: "Y.C. Chen" <yc_chen@...eedtech.com>

commit 7989b9ee8bafe5cc625381dd0c3c4586de27ca26 upstream.

Signed-off-by: Y.C. Chen <yc_chen@...eedtech.com>
Reviewed-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/gpu/drm/ast/ast_mode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -1233,7 +1233,7 @@ static int ast_cursor_move(struct drm_cr
 	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, ((y >> 8) & 0x07));
 
 	/* dummy write to fire HWC */
-	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xCB, 0xFF, 0x00);
+	ast_show_cursor(crtc);
 
 	return 0;
 }