linux-kernel - [PATCH 07/11] drm/qxl: Handle correctly failures in qxl_alloc_relase

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Date:	Wed,  3 Jun 2015 12:09:15 +0100
From:	Frediano Ziglio <fziglio@...hat.com>
To:	fziglio@...hat.com, spice-devel@...ts.freedesktop.org,
	airlied@...ux.ie, dri-devel@...ts.freedesktop.org,
	airlied@...hat.com
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 07/11] drm/qxl: Handle correctly failures in qxl_alloc_relase_reserved

Free resources correctly if function fails

Signed-off-by: Frediano Ziglio <fziglio@...hat.com>
Reviewed-by: Dave Airlie <airlied@...hat.com>
---
 drivers/gpu/drm/qxl/qxl_release.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
index 6fd8e50..00604ed 100644
--- a/drivers/gpu/drm/qxl/qxl_release.c
+++ b/drivers/gpu/drm/qxl/qxl_release.c
@@ -363,6 +363,7 @@ int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
 		ret = qxl_release_bo_alloc(qdev, &qdev->current_release_bo[cur_idx]);
 		if (ret) {
 			mutex_unlock(&qdev->release_mutex);
+			qxl_release_free(qdev, *release);
 			return ret;
 		}
 	}
@@ -377,13 +378,17 @@ int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
 
 	mutex_unlock(&qdev->release_mutex);
 
-	qxl_release_list_add(*release, bo);
+	ret = qxl_release_list_add(*release, bo);
+	qxl_bo_unref(&bo);
+	if (ret) {
+		qxl_release_free(qdev, *release);
+		return ret;
+	}
 
 	info = qxl_release_map(qdev, *release);
 	info->id = idr_ret;
 	qxl_release_unmap(qdev, *release, info);
 
-	qxl_bo_unref(&bo);
 	return ret;
 }
 
-- 
2.1.0

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