Unverified Commit bb2eb336 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!5195 dmaengine: fix NULL pointer in channel unregistration function 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zheng Yejian <zhengyejian1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/O72YUEP2GLKL2NC6L4K3AZTXAWXJMML5/ 
 
https://gitee.com/src-openeuler/kernel/issues/I97NHW 
 
Link:https://gitee.com/openeuler/kernel/pulls/5195

 

Reviewed-by: default avatarXu Kuohai <xukuohai@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 65290775 3923c8f0

drivers/dma/dmaengine.c

+3 −0
Original line number Diff line number Diff line
@@ -1108,6 +1108,9 @@ EXPORT_SYMBOL_GPL(dma_async_device_channel_register); 
static void __dma_async_device_channel_unregister(struct dma_device *device,

						  struct dma_chan *chan)

{

	if (chan->local == NULL)

		return;



	WARN_ONCE(!device->device_release && chan->client_count,

		  "%s called while %d clients hold a reference\n",

		  __func__, chan->client_count);