linux-kernel - [PATCH 4/7] spi: spi-fsl-dspi: avoid preparing the clock two times

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Date:	Tue, 27 Jan 2015 16:27:21 +0530
From:	Bhuvanchandra DV <bhuvanchandra.dv@...adex.com>
To:	<mark.rutland@....com>
CC:	<stefan@...er.ch>, <shawn.guo@...aro.org>, <robh+dt@...nel.org>,
	<pawel.moll@....com>, <ijc+devicetree@...lion.org.uk>,
	<galak@...eaurora.org>, <linux@....linux.org.uk>,
	<broonie@...nel.org>, <B44548@...escale.com>,
	<Li.Xiubo@...escale.com>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-spi@...r.kernel.org>,
	Bhuvanchandra DV <bhuvanchandra.dv@...adex.com>
Subject: [PATCH 4/7] spi: spi-fsl-dspi: avoid preparing the clock two times

regmap_read/regmap_write will expect the peripheral clock
to be enabled before accessing the registers of the peripheral.
Since the peripheral clock is enabled separatly, avoid redundant clock
prepare (with devm_regmap_init_mmio_clk) and use devm_regmap_init_mmio instead.

Acked-by: Stefan Agner <stefan@...er.ch>
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@...adex.com>
---
 drivers/spi/spi-fsl-dspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 9b80d54..5378148 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -502,7 +502,7 @@ static int dspi_probe(struct platform_device *pdev)
 		goto out_master_put;
 	}
 
-	dspi->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "dspi", base,
+	dspi->regmap = devm_regmap_init_mmio(&pdev->dev, base,
 						&dspi_regmap_config);
 	if (IS_ERR(dspi->regmap)) {
 		dev_err(&pdev->dev, "failed to init regmap: %ld\n",
-- 
2.2.2

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