Unverified Commit 42d61847 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12770 v2 hisilicon/hisi_hbmcache: Use mutex_trylock to prevent hung task 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhang Zekun <zhangzekun11@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/MYGVRVFRQJDB6RVMAF3UYASBXDDKZ5GG/ 
 
https://gitee.com/openeuler/kernel/issues/IB0X12 
 
Link:https://gitee.com/openeuler/kernel/pulls/12770

 

Reviewed-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents c67d418d effe6fe8

drivers/soc/hisilicon/hisi_hbmcache.c

+3 −1
Original line number Diff line number Diff line
@@ -24,7 +24,9 @@ static ssize_t state_store(struct device *d, struct device_attribute *attr, 
	acpi_handle handle = adev->handle;

	acpi_status status = AE_OK;



	mutex_lock(&cache_lock);

	if (!mutex_trylock(&cache_lock))

		return -EBUSY;



	switch (type) {

	case STATE_ONLINE:

		status = acpi_evaluate_object(handle, "_ON", NULL, NULL);