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sysfs: Make poll behaviour consistent

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When no events have been reported by sysfs_notify(), sd->s_events
was previously set to zero.  The initial value for new readers is
also zero, so poll was blocking, regardless of whether the attribute
was read by the process or not.

Make poll behave consistently by setting the initial value of
sd->s_events to non-zero.

Signed-off-by: Juha Yrjola <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Juha Yrj�l� 2006-08-03 19:06:25 +03:00 • committed by Greg Kroah-Hartman
commit eea3f8911f
1 changed files with 1 additions and 1 deletions
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2
fs/sysfs/dir.c
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@ -43,7 +43,7 @@ static struct sysfs_dirent * sysfs_new_dirent(struct sysfs_dirent * parent_sd,
memset(sd, 0, sizeof(*sd));
atomic_set(&sd->s_count, 1);
atomic_set(&sd->s_event, 0);
atomic_set(&sd->s_event, 1);
INIT_LIST_HEAD(&sd->s_children);
list_add(&sd->s_sibling, &parent_sd->s_children);
sd->s_element = element;