linux-kernel - [PATCH] drm/exynos: fix error return code in exynos_drm_ipp_set

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Message-ID: <CAPgLHd8Xu8+d7fxtnC0sdQnTDtrZo8jhB8JJ4b2Lp4SYqcjG4A@mail.gmail.com>
Date:	Tue, 7 May 2013 21:24:30 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	inki.dae@...sung.com, jy0922.shim@...sung.com,
	sw0312.kim@...sung.com, kyungmin.park@...sung.com, airlied@...ux.ie
Cc:	yongjun_wei@...ndmicro.com.cn, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drm/exynos: fix error return code in exynos_drm_ipp_set_property()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.
ipp_create_cmd_work() return ERR_PTR() on error and never return
NULL, so use IS_ERR() instead of IS_ERR_OR_NULL().

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/gpu/drm/exynos/exynos_drm_ipp.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
index 29d2ad3..b0d6431 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
@@ -521,20 +521,23 @@ int exynos_drm_ipp_set_property(struct drm_device *drm_dev, void *data,
 	c_node->state = IPP_STATE_IDLE;
 
 	c_node->start_work = ipp_create_cmd_work();
-	if (IS_ERR_OR_NULL(c_node->start_work)) {
+	if (IS_ERR(c_node->start_work)) {
 		DRM_ERROR("failed to create start work.\n");
+		ret = PTR_ERR(c_node->start_work);
 		goto err_clear;
 	}
 
 	c_node->stop_work = ipp_create_cmd_work();
-	if (IS_ERR_OR_NULL(c_node->stop_work)) {
+	if (IS_ERR(c_node->stop_work)) {
 		DRM_ERROR("failed to create stop work.\n");
+		ret = PTR_ERR(c_node->stop_work);
 		goto err_free_start;
 	}
 
 	c_node->event_work = ipp_create_event_work();
-	if (IS_ERR_OR_NULL(c_node->event_work)) {
+	if (IS_ERR(c_node->event_work)) {
 		DRM_ERROR("failed to create event work.\n");
+		ret = PTR_ERR(c_node->event_work);
 		goto err_free_stop;
 	}
 

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