linux-kernel - [PATCH v1 4/4] spi/xilinx: Use of_property_read

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Message-Id: <95fea2ecead16435fc526b1d7f36a0a1ec1635ff.1373290150.git.michal.simek@xilinx.com>
Date:	Mon,  8 Jul 2013 15:29:17 +0200
From:	Michal Simek <michal.simek@...inx.com>
To:	linux-kernel@...r.kernel.org
Cc:	Michal Simek <monstr@...str.eu>,
	Michal Simek <michal.simek@...inx.com>,
	Mark Brown <broonie@...nel.org>,
	linux-spi <linux-spi@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	spi-devel-general@...ts.sourceforge.net,
	devicetree-discuss@...ts.ozlabs.org
Subject: [PATCH v1 4/4] spi/xilinx: Use of_property_read_u32 for reading value from node

It simplifies driver probing.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---
 drivers/spi/spi-xilinx.c | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index a6bb5b0..07a7bca 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -372,17 +372,9 @@ static int xilinx_spi_probe(struct platform_device *pdev)
 	if (pdata) {
 		num_cs = pdata->num_chipselect;
 		bits_per_word = pdata->bits_per_word;
-	}
-
-	if (pdev->dev.of_node) {
-		const __be32 *prop;
-		int len;
-
-		/* number of slave select bits is required */
-		prop = of_get_property(pdev->dev.of_node, "xlnx,num-ss-bits",
-				       &len);
-		if (prop && len >= sizeof(*prop))
-			num_cs = __be32_to_cpup(prop);
+	} else {
+		of_property_read_u32(pdev->dev.of_node, "xlnx,num-ss-bits",
+					  &num_cs);
 	}

 	if (!num_cs) {
--
1.8.2.3


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