linux-kernel - [PATCH] dma: of: Remove unnecessary list

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Message-Id: <1364217862-32677-1-git-send-email-lars@metafoo.de>
Date:	Mon, 25 Mar 2013 14:24:22 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Vinod Koul <vinod.koul@...el.com>, Dan Williams <djbw@...com>
Cc:	Jon Hunter <jon-hunter@...com>, linux-kernel@...r.kernel.org,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: [PATCH] dma: of: Remove unnecessary list_empty check

list_for_each_entry is able to handle empty lists just fine, there is no need
to make sure that the list is non empty.

Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
---
 drivers/dma/of-dma.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c
index 7cad4d7..6679020 100644
--- a/drivers/dma/of-dma.c
+++ b/drivers/dma/of-dma.c
@@ -36,11 +36,6 @@ static struct of_dma *of_dma_get_controller(struct of_phandle_args *dma_spec)
 
 	spin_lock(&of_dma_lock);
 
-	if (list_empty(&of_dma_list)) {
-		spin_unlock(&of_dma_lock);
-		return NULL;
-	}
-
 	list_for_each_entry(ofdma, &of_dma_list, of_dma_controllers)
 		if ((ofdma->of_node == dma_spec->np) &&
 		    (ofdma->of_dma_nbcells == dma_spec->args_count)) {
-- 
1.8.0

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