diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/scsi_transport_sas.c | 36 |
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; |