linux-kernel - [PATCH 4.14 034/100] drm/ast: fixed cursor may disappear sometimes

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Message-Id: <20181129140101.771933088@linuxfoundation.org>
Date:   Thu, 29 Nov 2018 15:12:04 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, "Y.C. Chen" <yc_chen@...eedtech.com>,
        Dave Airlie <airlied@...hat.com>
Subject: [PATCH 4.14 034/100] drm/ast: fixed cursor may disappear sometimes

4.14-stable 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>
Cc: <stable@...r.kernel.org>
Reviewed-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 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
@@ -1255,7 +1255,7 @@ 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;
 }