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[SCSI] make some sas class properties optional

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aic94xx doesn't have a use for the bay or enclosure identifiers.
Also, I think it's not going to need a get_linkerrors(), so wire up
all of these exported properties as conditional on the underlying
function support.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley 2006-03-02 16:01:31 -06:00 committed by James Bottomley
parent 39a112403f
commit dd9fbb5213
1 changed files with 31 additions and 5 deletions
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36
drivers/scsi/scsi_transport_sas.c
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@ -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;