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[PATCH] sysfs: if show/store is missing return -EIO

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sysfs: if attribute does not implement show or store method
       read/write should return -EIO instead of 0 or -EINVAL.

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 01:22:00 -05:00
committed by Greg Kroah-Hartman
parent d48593bf20
commit c76d0abd07
2 changed files with 4 additions and 4 deletions
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4
fs/sysfs/file.c
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@ -23,7 +23,7 @@ subsys_attr_show(struct kobject * kobj, struct attribute * attr, char * page)
{
struct subsystem * s = to_subsys(kobj);
struct subsys_attribute * sattr = to_sattr(attr);
ssize_t ret = 0;
ssize_t ret = -EIO;
if (sattr->show)
ret = sattr->show(s,page);
@ -36,7 +36,7 @@ subsys_attr_store(struct kobject * kobj, struct attribute * attr,
{
struct subsystem * s = to_subsys(kobj);
struct subsys_attribute * sattr = to_sattr(attr);
ssize_t ret = 0;
ssize_t ret = -EIO;
if (sattr->store)
ret = sattr->store(s,page,count);