Commit 31eccbf1 authored by wenglianfa's avatar wenglianfa Committed by Juan Zhou
Browse files

RDMA/hns: Fix long waiting cmd event when reset 

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9FIHP



----------------------------------------------------------------------

During the reset, the cmd event cannot be reported. As a result,
Thread waiting for cmd event for a long time. To fix it, notify
cmd not to wait for cmd event when reset starts.

Fixes: 9a443537 ("IB/hns: Add driver files for hns RoCE driver")
Signed-off-by: default avatarwenglianfa <wenglianfa@huawei.com>
Signed-off-by: default avatarJuan Zhou <zhoujuan51@h-partners.com>
parent b2156fee

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+17 −0
Original line number Diff line number Diff line
@@ -7449,6 +7449,20 @@ static void hns_roce_v2_reset_notify_user(struct hns_roce_dev *hr_dev) 
	mutex_unlock(&hr_dev->uctx_list_mutex);

}



static void hns_roce_v2_reset_notify_cmd(struct hns_roce_dev *hr_dev)

{

	struct hns_roce_cmdq *hr_cmd = &hr_dev->cmd;

	int i;



	if (!hr_dev->cmd_mod)

		return;



	for (i = 0; i < hr_cmd->max_cmds; i++) {

		hr_cmd->context[i].result = -EBUSY;

		complete(&hr_cmd->context[i].done);

	}

}



static int hns_roce_hw_v2_reset_notify_down(struct hnae3_handle *handle)

{

	struct hns_roce_dev *hr_dev;
@@ -7472,6 +7486,9 @@ static int hns_roce_hw_v2_reset_notify_down(struct hnae3_handle *handle) 


	hr_dev->state = HNS_ROCE_DEVICE_STATE_RST_DOWN;



	/* Complete the CMDQ event in advance during the reset. */

	hns_roce_v2_reset_notify_cmd(hr_dev);



	return 0;

}