[SCSI] lpfc 8.1.7: Adding new issue_reset sysfs attribute (40496f07) · Commits · 戴 / test

drivers/scsi/lpfc/lpfc_attr.c

+43 −0

Original line number	Diff line number	Diff line
		@@ -243,6 +243,47 @@ lpfc_issue_lip(struct Scsi_Host *host)
		return 0;
		}

		static int
		lpfc_selective_reset(struct lpfc_hba *phba)
		{
		struct completion online_compl;
		int status = 0;

		init_completion(&online_compl);
		lpfc_workq_post_event(phba, &status, &online_compl,
		LPFC_EVT_OFFLINE);
		wait_for_completion(&online_compl);

		if (status != 0)
		return -EIO;

		init_completion(&online_compl);
		lpfc_workq_post_event(phba, &status, &online_compl,
		LPFC_EVT_ONLINE);
		wait_for_completion(&online_compl);

		if (status != 0)
		return -EIO;

		return 0;
		}

		static ssize_t
		lpfc_issue_reset(struct class_device cdev, const char buf, size_t count)
		{
		struct Scsi_Host *host = class_to_shost(cdev);
		struct lpfc_hba phba = (struct lpfc_hba)host->hostdata;
		int status = -EINVAL;

		if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
		status = lpfc_selective_reset(phba);

		if (status == 0)
		return strlen(buf);
		else
		return status;
		}

		static ssize_t
		lpfc_nport_evt_cnt_show(struct class_device cdev, char buf)
		{
		@@ -546,6 +587,7 @@ static CLASS_DEVICE_ATTR(board_online, S_IRUGO \| S_IWUSR,
		lpfc_board_online_show, lpfc_board_online_store);
		static CLASS_DEVICE_ATTR(board_mode, S_IRUGO \| S_IWUSR,
		lpfc_board_mode_show, lpfc_board_mode_store);
		static CLASS_DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);

		static int lpfc_poll = 0;
		module_param(lpfc_poll, int, 0);
		@@ -751,6 +793,7 @@ struct class_device_attribute *lpfc_host_attrs[] = {
		&class_device_attr_management_version,
		&class_device_attr_board_online,
		&class_device_attr_board_mode,
		&class_device_attr_issue_reset,
		&class_device_attr_lpfc_poll,
		&class_device_attr_lpfc_poll_tmo,
		NULL,

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