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Commit 34cad85d authored by Dan Williams's avatar Dan Williams
Browse files

isci: add "isci_id" attribute 



Allow each controller to be identified via sysfs.

# cat /sys/class/scsi_host/host13/isci_id
1

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 6e2802a7

drivers/scsi/isci/init.c

+26 −4
Original line number Diff line number Diff line
@@ -229,12 +229,28 @@ static int isci_register_sas_ha(struct isci_host *isci_host) 
	return 0;

}



static void isci_unregister_sas_ha(struct isci_host *isci_host)

static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf)

{

	struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev);

	struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);

	struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha);



	return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id);

}



static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL);



static void isci_unregister(struct isci_host *isci_host)

{

	struct Scsi_Host *shost;



	if (!isci_host)

		return;



	sas_unregister_ha(&(isci_host->sas_ha));

	shost = isci_host->shost;

	device_remove_file(&shost->shost_dev, &dev_attr_isci_id);



	sas_unregister_ha(&isci_host->sas_ha);



	sas_remove_host(isci_host->shost);

	scsi_remove_host(isci_host->shost);
@@ -477,8 +493,14 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) 
	if (err)

		goto err_shost_remove;



	err = device_create_file(&shost->shost_dev, &dev_attr_isci_id);

	if (err)

		goto err_unregister_ha;



	return isci_host;



 err_unregister_ha:

	sas_unregister_ha(&(isci_host->sas_ha));

 err_shost_remove:

	scsi_remove_host(shost);

 err_shost:
@@ -640,7 +662,7 @@ static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_devic 


 err_host_alloc:

	for_each_isci_host(i, isci_host, pdev)

		isci_unregister_sas_ha(isci_host);

		isci_unregister(isci_host);

	return err;

}
@@ -650,7 +672,7 @@ static void __devexit isci_pci_remove(struct pci_dev *pdev) 
	int i;



	for_each_isci_host(i, isci_host, pdev) {

		isci_unregister_sas_ha(isci_host);

		isci_unregister(isci_host);

		isci_host_deinit(isci_host);

		scic_controller_disable_interrupts(isci_host->core_controller);

	}