linux-kernel - [PATCH AUTOSEL 4.19 053/671] drm: rcar-du: Fix the return value in case of error in 'rcar_du_crtc_set_crc

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Date:   Thu, 16 Jan 2020 11:44:44 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Sasha Levin <sashal@...nel.org>,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 053/671] drm: rcar-du: Fix the return value in case of error in 'rcar_du_crtc_set_crc_source()'

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

[ Upstream commit 4d486f18d91b1876040bf87e9ad78981a08b15a6 ]

We return 0 unconditionally in 'rcar_du_crtc_set_crc_source()'.
However, 'ret' is set to some error codes if some function calls fail.

Return 'ret' instead to propagate the error code.

Fixes: 47a52d024e89 ("media: drm: rcar-du: Add support for CRC computation")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 15dc9caa128b..212e5e11e4b7 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -837,7 +837,7 @@ static int rcar_du_crtc_set_crc_source(struct drm_crtc *crtc,
 	drm_modeset_drop_locks(&ctx);
 	drm_modeset_acquire_fini(&ctx);
 
-	return 0;
+	return ret;
 }
 
 static const struct drm_crtc_funcs crtc_funcs_gen2 = {
-- 
2.20.1