[PATCH 06/12] pm80xx : sysfs attribute for number of phys.

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From: Viswas G <Viswas.G@xxxxxxxxxxxxx>

Added sysfs attribute to show number of phys.

Signed-off-by: Deepak Ukey <deepak.ukey@xxxxxxxxxxxxx>
Signed-off-by: Viswas G <Viswas.G@xxxxxxxxxxxxx>
Signed-off-by: Vishakha Channapattan <vishakhavc@xxxxxxxxxx>
Signed-off-by: Bhavesh Jashnani <bjashnani@xxxxxxxxxx>
Signed-off-by: Radha Ramachandran <radha@xxxxxxxxxx>
Signed-off-by: Akshat Jain <akshatzen@xxxxxxxxxx>
Signed-off-by: Yu Zheng <yuuzheng@xxxxxxxxxx>
---
 drivers/scsi/pm8001/pm8001_ctl.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c
index 69458b318a20..704c0daa7937 100644
--- a/drivers/scsi/pm8001/pm8001_ctl.c
+++ b/drivers/scsi/pm8001/pm8001_ctl.c
@@ -89,6 +89,25 @@ static ssize_t controller_fatal_error_show(struct device *cdev,
 }
 static DEVICE_ATTR_RO(controller_fatal_error);
 
+/**
+ * pm8001_ctl_num_phys_show - Number of phys
+ * @cdev:pointer to embedded class device
+ * @buf:the buffer returned
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t num_phys_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	int ret;
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	ret = sprintf(buf, "%d", pm8001_ha->chip->n_phy);
+	return ret;
+}
+static DEVICE_ATTR_RO(num_phys);
+
 /**
  * pm8001_ctl_fw_version_show - firmware version
  * @cdev: pointer to embedded class device
@@ -825,6 +844,7 @@ static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 struct device_attribute *pm8001_host_attrs[] = {
 	&dev_attr_interface_rev,
 	&dev_attr_controller_fatal_error,
+	&dev_attr_num_phys,
 	&dev_attr_fw_version,
 	&dev_attr_update_fw,
 	&dev_attr_aap_log,
-- 
2.16.3




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