summaryrefslogtreecommitdiff
path: root/drivers/scsi/scsi_transport_sas.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/scsi_transport_sas.c')
-rw-r--r--drivers/scsi/scsi_transport_sas.c36
1 files changed, 31 insertions, 5 deletions
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index fed39abeff86..434f3954aa87 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -273,7 +273,7 @@ show_sas_phy_##field(struct class_device *cdev, char *buf) \
if (!phy->local_attached) \
return -EINVAL; \
\
- error = i->f->get_linkerrors(phy); \
+ error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
if (error) \
return error; \
return snprintf(buf, 20, "%u\n", phy->field); \
@@ -814,6 +814,14 @@ static int sas_user_scan(struct Scsi_Host *shost, uint channel,
i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \
count++
+#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
+ i->private_rphy_attrs[count] = class_device_attr_##field; \
+ i->private_rphy_attrs[count].attr.mode = S_IRUGO; \
+ i->private_rphy_attrs[count].store = NULL; \
+ i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \
+ if (i->f->func) \
+ count++
+
#define SETUP_PORT_ATTRIBUTE(field) \
i->private_phy_attrs[count] = class_device_attr_##field; \
i->private_phy_attrs[count].attr.mode = S_IRUGO; \
@@ -821,6 +829,14 @@ static int sas_user_scan(struct Scsi_Host *shost, uint channel,
i->phy_attrs[count] = &i->private_phy_attrs[count]; \
count++
+#define SETUP_OPTIONAL_PORT_ATTRIBUTE(field, func) \
+ i->private_phy_attrs[count] = class_device_attr_##field; \
+ i->private_phy_attrs[count].attr.mode = S_IRUGO; \
+ i->private_phy_attrs[count].store = NULL; \
+ i->phy_attrs[count] = &i->private_phy_attrs[count]; \
+ if (i->f->func) \
+ count++
+
#define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
i->private_phy_attrs[count] = class_device_attr_##field; \
i->private_phy_attrs[count].attr.mode = S_IWUGO; \
@@ -828,6 +844,14 @@ static int sas_user_scan(struct Scsi_Host *shost, uint channel,
i->phy_attrs[count] = &i->private_phy_attrs[count]; \
count++
+#define SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(field, func) \
+ i->private_phy_attrs[count] = class_device_attr_##field; \
+ i->private_phy_attrs[count].attr.mode = S_IWUGO; \
+ i->private_phy_attrs[count].show = NULL; \
+ i->phy_attrs[count] = &i->private_phy_attrs[count]; \
+ if (i->f->func) \
+ count++
+
/**
* sas_attach_transport -- instantiate SAS transport template
@@ -883,8 +907,8 @@ sas_attach_transport(struct sas_function_template *ft)
SETUP_PORT_ATTRIBUTE(running_disparity_error_count);
SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count);
SETUP_PORT_ATTRIBUTE(phy_reset_problem_count);
- SETUP_PORT_ATTRIBUTE_WRONLY(link_reset);
- SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset);
+ SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(link_reset, phy_reset);
+ SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
i->phy_attrs[count] = NULL;
count = 0;
@@ -893,8 +917,10 @@ sas_attach_transport(struct sas_function_template *ft)
SETUP_RPORT_ATTRIBUTE(rphy_device_type);
SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
- SETUP_RPORT_ATTRIBUTE(rphy_enclosure_identifier);
- SETUP_RPORT_ATTRIBUTE(rphy_bay_identifier);
+ SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
+ get_enclosure_identifier);
+ SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
+ get_bay_identifier);
i->rphy_attrs[count] = NULL;
return &i->t;