[POWERPC] cell: catch errors from sysfs_create_group()
We're currently getting a warning from not checking the result of
sysfs_create_group, which is declared as __must_check.
This change introduces appropriate error-handling for
spu_add_sysdev_attr_group()
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index ee37e0e..f73263b 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -574,13 +574,27 @@
int spu_add_sysdev_attr_group(struct attribute_group *attrs)
{
struct spu *spu;
+ int rc = 0;
mutex_lock(&spu_full_list_mutex);
- list_for_each_entry(spu, &spu_full_list, full_list)
- sysfs_create_group(&spu->sysdev.kobj, attrs);
+ list_for_each_entry(spu, &spu_full_list, full_list) {
+ rc = sysfs_create_group(&spu->sysdev.kobj, attrs);
+
+ /* we're in trouble here, but try unwinding anyway */
+ if (rc) {
+ printk(KERN_ERR "%s: can't create sysfs group '%s'\n",
+ __func__, attrs->name);
+
+ list_for_each_entry_continue_reverse(spu,
+ &spu_full_list, full_list)
+ sysfs_remove_group(&spu->sysdev.kobj, attrs);
+ break;
+ }
+ }
+
mutex_unlock(&spu_full_list_mutex);
- return 0;
+ return rc;
}
EXPORT_SYMBOL_GPL(spu_add_sysdev_attr_group);