[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>

diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index bc12b5d..3a26f74 100644 (file)
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -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;
 }