From: Anatolij Gustschin <agust@denx.de>
Date: Tue, 26 Jan 2010 09:26:06 +0000 (+0100)
Subject: dmaengine: fix memleak in dma_async_device_unregister
X-Git-Tag: firefly_0821_release~9833^2~3188^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=adef477268ff5ddd0195611dc7e26d7a879fefe1;p=firefly-linux-kernel-4.4.55.git

dmaengine: fix memleak in dma_async_device_unregister

While debugging a dma driver I noticed a memleak after
unloading the driver module.

Caught by kmemleak.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 6f51a0a7a8bb..e7a3230fb7d5 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -826,6 +826,7 @@ void dma_async_device_unregister(struct dma_device *device)
 		chan->dev->chan = NULL;
 		mutex_unlock(&dma_list_mutex);
 		device_unregister(&chan->dev->device);
+		free_percpu(chan->local);
 	}
 }
 EXPORT_SYMBOL(dma_async_device_unregister);