From 6c1852a08e444a2e66367352a99c0e93c8bf3e97 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Fri, 29 Apr 2005 01:26:06 -0500 Subject: [PATCH] [PATCH] sysfs: (driver/block) if show/store is missing return -EIO sysfs: fix drivers/block so if an attribute doesn't implement show or store method read/write will return -EIO instead of 0 or -EINVAL. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/block/as-iosched.c | 4 ++-- drivers/block/cfq-iosched.c | 4 ++-- drivers/block/deadline-iosched.c | 4 ++-- drivers/block/genhd.c | 2 +- drivers/block/ll_rw_blk.c | 4 ++-- 5 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/block/as-iosched.c b/drivers/block/as-iosched.c index a9575bb58a5e..638db06de2be 100644 --- a/drivers/block/as-iosched.c +++ b/drivers/block/as-iosched.c @@ -2044,7 +2044,7 @@ as_attr_show(struct kobject *kobj, struct attribute *attr, char *page) struct as_fs_entry *entry = to_as(attr); if (!entry->show) - return 0; + return -EIO; return entry->show(e->elevator_data, page); } @@ -2057,7 +2057,7 @@ as_attr_store(struct kobject *kobj, struct attribute *attr, struct as_fs_entry *entry = to_as(attr); if (!entry->store) - return -EINVAL; + return -EIO; return entry->store(e->elevator_data, page, length); } diff --git a/drivers/block/cfq-iosched.c b/drivers/block/cfq-iosched.c index 2210bacad56a..3ac47dde64da 100644 --- a/drivers/block/cfq-iosched.c +++ b/drivers/block/cfq-iosched.c @@ -1775,7 +1775,7 @@ cfq_attr_show(struct kobject *kobj, struct attribute *attr, char *page) struct cfq_fs_entry *entry = to_cfq(attr); if (!entry->show) - return 0; + return -EIO; return entry->show(e->elevator_data, page); } @@ -1788,7 +1788,7 @@ cfq_attr_store(struct kobject *kobj, struct attribute *attr, struct cfq_fs_entry *entry = to_cfq(attr); if (!entry->store) - return -EINVAL; + return -EIO; return entry->store(e->elevator_data, page, length); } diff --git a/drivers/block/deadline-iosched.c b/drivers/block/deadline-iosched.c index d63d34c671f7..7f79f3dd0165 100644 --- a/drivers/block/deadline-iosched.c +++ b/drivers/block/deadline-iosched.c @@ -886,7 +886,7 @@ deadline_attr_show(struct kobject *kobj, struct attribute *attr, char *page) struct deadline_fs_entry *entry = to_deadline(attr); if (!entry->show) - return 0; + return -EIO; return entry->show(e->elevator_data, page); } @@ -899,7 +899,7 @@ deadline_attr_store(struct kobject *kobj, struct attribute *attr, struct deadline_fs_entry *entry = to_deadline(attr); if (!entry->store) - return -EINVAL; + return -EIO; return entry->store(e->elevator_data, page, length); } diff --git a/drivers/block/genhd.c b/drivers/block/genhd.c index 8bbe01d4b487..53f7d846b747 100644 --- a/drivers/block/genhd.c +++ b/drivers/block/genhd.c @@ -322,7 +322,7 @@ static ssize_t disk_attr_show(struct kobject *kobj, struct attribute *attr, struct gendisk *disk = to_disk(kobj); struct disk_attribute *disk_attr = container_of(attr,struct disk_attribute,attr); - ssize_t ret = 0; + ssize_t ret = -EIO; if (disk_attr->show) ret = disk_attr->show(disk,page); diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c index f20eba22b14b..81fe3a0c1fe7 100644 --- a/drivers/block/ll_rw_blk.c +++ b/drivers/block/ll_rw_blk.c @@ -3574,7 +3574,7 @@ queue_attr_show(struct kobject *kobj, struct attribute *attr, char *page) q = container_of(kobj, struct request_queue, kobj); if (!entry->show) - return 0; + return -EIO; return entry->show(q, page); } @@ -3588,7 +3588,7 @@ queue_attr_store(struct kobject *kobj, struct attribute *attr, q = container_of(kobj, struct request_queue, kobj); if (!entry->store) - return -EINVAL; + return -EIO; return entry->store(q, page, length); } -- 2.20.1