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[SCSI] scsi_transport_spi: fix the attribute settings 

We now take advantage of the mode_t return of is_valid, and also
update the attributes when the target is configured.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
James Bottomley 2008-03-20 20:57:02 -05:00
parent 0f4238958d
commit 352f6bb422
1 changed files with 7 additions and 23 deletions
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30
drivers/scsi/scsi_transport_spi.c
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@ -1374,11 +1374,11 @@ static int spi_host_configure(struct transport_container *tc,
* overloads the return by setting 1<<1 if the attribute should
* be writeable */
#define TARGET_ATTRIBUTE_HELPER(name) \
(si->f->show_##name ? 1 : 0) + \
(si->f->set_##name ? 2 : 0)
(si->f->show_##name ? S_IRUGO : 0) | \
(si->f->set_##name ? S_IWUSR : 0)
static int target_attribute_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
static mode_t target_attribute_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct device *cdev = container_of(kobj, struct device, kobj);
struct scsi_target *starget = transport_class_to_starget(cdev);
@ -1428,7 +1428,7 @@ static int target_attribute_is_visible(struct kobject *kobj,
spi_support_ius(starget))
return TARGET_ATTRIBUTE_HELPER(hold_mcs);
else if (attr == &dev_attr_revalidate.attr)
return 1;
return S_IWUSR;
return 0;
}
@ -1462,25 +1462,9 @@ static int spi_target_configure(struct transport_container *tc,
struct device *cdev)
{
struct kobject *kobj = &cdev->kobj;
int i;
struct attribute *attr;
int rc;
for (i = 0; (attr = target_attributes[i]) != NULL; i++) {
int j = target_attribute_group.is_visible(kobj, attr, i);
/* FIXME: as well as returning -EEXIST, which we'd like
* to ignore, sysfs also does a WARN_ON and dumps a trace,
* which is bad, so temporarily, skip attributes that are
* already visible (the revalidate one) */
if (j && attr != &dev_attr_revalidate.attr)
rc = sysfs_add_file_to_group(kobj, attr,
target_attribute_group.name);
/* and make the attribute writeable if we have a set
* function */
if ((j & 1))
rc = sysfs_chmod_file(kobj, attr, attr->mode | S_IWUSR);
}
/* force an update based on parameters read from the device */
sysfs_update_group(kobj, &target_attribute_group);
return 0;
}