[PATCH -next 24/25] spi: spl022: Use helper function devm_clk_get_enabled()

[Li Zetao]

Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared
and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
replaced by devm_clk_get_enabled() when driver enables (and possibly
prepares) the clocks for the whole lifetime of the device. Moreover, it is
no longer necessary to unprepare and disable the clocks explicitly.
Moreover, the label "err_no_clk_en" is no used, drop it for clean code.

Signed-off-by: Li Zetao <lizetao1 at huawei.com>
---
 drivers/spi/spi-pl022.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 1af75eff26b6..468a7fea9091 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2168,19 +2168,13 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
 	dev_info(&adev->dev, "mapped registers from %pa to %p\n",
 		&adev->res.start, pl022->virtbase);
 
-	pl022->clk = devm_clk_get(&adev->dev, NULL);
+	pl022->clk = devm_clk_get_enabled(&adev->dev, NULL);
 	if (IS_ERR(pl022->clk)) {
 		status = PTR_ERR(pl022->clk);
 		dev_err(&adev->dev, "could not retrieve SSP/SPI bus clock\n");
 		goto err_no_clk;
 	}
 
-	status = clk_prepare_enable(pl022->clk);
-	if (status) {
-		dev_err(&adev->dev, "could not enable SSP/SPI bus clock\n");
-		goto err_no_clk_en;
-	}
-
 	/* Initialize transfer pump */
 	tasklet_init(&pl022->pump_transfers, pump_transfers,
 		     (unsigned long)pl022);
@@ -2236,16 +2230,14 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
 
 	return 0;
 
- err_spi_register:
+err_spi_register:
 	if (platform_info->enable_dma)
 		pl022_dma_remove(pl022);
- err_no_irq:
-	clk_disable_unprepare(pl022->clk);
- err_no_clk_en:
- err_no_clk:
- err_no_ioremap:
+err_no_irq:
+err_no_clk:
+err_no_ioremap:
 	amba_release_regions(adev);
- err_no_ioregion:
+err_no_ioregion:
 	spi_master_put(master);
 	return status;
 }
@@ -2268,7 +2260,6 @@ pl022_remove(struct amba_device *adev)
 	if (pl022->master_info->enable_dma)
 		pl022_dma_remove(pl022);
 
-	clk_disable_unprepare(pl022->clk);
 	amba_release_regions(adev);
 	tasklet_disable(&pl022->pump_transfers);
 }
-- 
2.34.1