From: wenglianfa wenglianfa@huawei.com
driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAL7SX
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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: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver") Signed-off-by: wenglianfa wenglianfa@huawei.com Signed-off-by: Xinghai Cen cenxinghai@h-partners.com --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index d7fba8f7ceb4..2daf6fd96451 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -7872,6 +7872,20 @@ 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; @@ -7895,6 +7909,9 @@ 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; }