openwrt/target/linux/brcm2708/patches-3.18/0047-spi-bcm2708-Prepare-fo...

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From d828fe6d765939e457e87d7f348adfe69cfd4175 Mon Sep 17 00:00:00 2001
From: notro <notro@tronnes.org>
Date: Sun, 6 Jul 2014 12:07:25 +0200
Subject: [PATCH 047/114] spi-bcm2708: Prepare for Common Clock Framework
migration
As part of migrating to use the Common Clock Framework, replace clk_enable()
with clk_prepare_enable() and clk_disable() with clk_disable_unprepare().
This does not affect behaviour under the current clock implementation.
Also add a missing clk_disable_unprepare() in the probe error path.
Signed-off-by: Noralf Tronnes <notro@tronnes.org>
---
drivers/spi/spi-bcm2708.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-bcm2708.c b/drivers/spi/spi-bcm2708.c
index b04a57d..349d21f 100644
--- a/drivers/spi/spi-bcm2708.c
+++ b/drivers/spi/spi-bcm2708.c
@@ -545,7 +545,7 @@ static int bcm2708_spi_probe(struct platform_device *pdev)
}
/* initialise the hardware */
- clk_enable(clk);
+ clk_prepare_enable(clk);
bcm2708_wr(bs, SPI_CS, SPI_CS_REN | SPI_CS_CLEAR_RX | SPI_CS_CLEAR_TX);
err = spi_register_master(master);
@@ -561,6 +561,7 @@ static int bcm2708_spi_probe(struct platform_device *pdev)
out_free_irq:
free_irq(bs->irq, master);
+ clk_disable_unprepare(bs->clk);
out_workqueue:
destroy_workqueue(bs->workq);
out_iounmap:
@@ -585,7 +586,7 @@ static int bcm2708_spi_remove(struct platform_device *pdev)
flush_work(&bs->work);
- clk_disable(bs->clk);
+ clk_disable_unprepare(bs->clk);
clk_put(bs->clk);
free_irq(bs->irq, master);
iounmap(bs->base);
--
1.8.3.2