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[PATCH] sysfs: (driver/base) if show/store is missing return -EIO

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sysfs: fix drivers/base so if an attribute doesn't implement
       show or store method read/write will return -EIO
       instead of 0.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dmitry Torokhov 2005-04-29 01:23:47 -05:00 • committed by Greg Kroah-Hartman
parent c76d0abd07
commit 4a0c20bf8c
4 changed files with 8 additions and 8 deletions
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4
drivers/base/class.c
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@ -26,7 +26,7 @@ class_attr_show(struct kobject * kobj, struct attribute * attr, char * buf)
{
struct class_attribute * class_attr = to_class_attr(attr);
struct class * dc = to_class(kobj);
ssize_t ret = 0;
ssize_t ret = -EIO;
if (class_attr->show)
ret = class_attr->show(dc, buf);
@ -39,7 +39,7 @@ class_attr_store(struct kobject * kobj, struct attribute * attr,
{
struct class_attribute * class_attr = to_class_attr(attr);
struct class * dc = to_class(kobj);
ssize_t ret = 0;
ssize_t ret = -EIO;
if (class_attr->store)
ret = class_attr->store(dc, buf, count);