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Date: Wed, 15 Jan 2014 22:29:14 -0600 From: David Fries <David@...es.net> To: linux-kernel@...r.kernel.org Cc: Evgeniy Polyakov <zbr@...emap.net>, GregKH <greg@...ah.com> Subject: [PATCH 03/15] w1: Only wake up the search process if it is going to be searching 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@...es.net> Acked-by: Evgeniy Polyakov <zbr@...emap.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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