linux-kernel - [PATCH] drm/msm: fix leaks if initialization fails

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Date:   Mon, 9 Mar 2020 11:14:10 +0100
From:   Pavel Machek <pavel@...x.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Pavel Machek <pavel@...x.de>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Stephen Boyd <swboyd@...omium.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Rob Clark <robdclark@...il.com>,
        Sean Paul <seanpaul@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH] drm/msm: fix leaks if initialization fails

We should free resources in unlikely case of allocation failure.
    
Signed-off-by: Pavel Machek <pavel@...x.de>

---

> Can you submit a patch to fix it?

Here it is.

Best regards,
								Pavel


diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 83a0000eecb3..f5c1495cc4b9 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -444,8 +444,10 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
 	if (!dev->dma_parms) {
 		dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
 					      GFP_KERNEL);
-		if (!dev->dma_parms)
-			return -ENOMEM;
+		if (!dev->dma_parms) {
+			ret = -ENOMEM;
+			goto err_msm_uninit;
+		}
 	}
 	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
 


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