[PATCH 03/14] w1: Only wake up the search process if it is going to be searching

David Fries
2013-12-29T06:53:01Z

It's valid to set the search count to 0 to stop searching, so don't
wake up the search thread to not search.

Signed-off-by: David Fries <David@Fries.net>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
---
drivers/w1/w1.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 67b6d5f..92766a9 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -243,7 +243,9 @@ static ssize_t w1_master_attribute_store_search(struct device * dev,
mutex_lock(&md->mutex);
md->search_count = tmp;
mutex_unlock(&md->mutex);
- wake_up_process(md->thread);
+ /* Only wake if it is going to be searching. */
+ if (tmp)
+ wake_up_process(md->thread);

return count;
}
--
1.7.10.4