Linux-Clk Archive on lore.kernel.org
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From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Mark Brown <broonie@kernel.org>
Cc: linux-clk@vger.kernel.org, kernel@pengutronix.de,
	linux-spi@vger.kernel.org
Subject: [PATCH v6 6/6] spi: davinci: Simplify using devm_clk_get_enabled()
Date: Mon, 26 Apr 2021 16:17:30 +0200
Message-ID: <20210426141730.2826832-7-u.kleine-koenig@pengutronix.de> (raw)
In-Reply-To: <20210426141730.2826832-1-u.kleine-koenig@pengutronix.de>

devm_clk_get_enabled() returns the clk already (prepared and) enabled
and the automatically called cleanup cares for disabling (and
unpreparing). So simplify .probe() and .remove() accordingly.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/spi/spi-davinci.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index 7453a1dbbc06..63ee918ecdb0 100644
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -936,14 +936,11 @@ static int davinci_spi_probe(struct platform_device *pdev)
 
 	dspi->bitbang.master = master;
 
-	dspi->clk = devm_clk_get(&pdev->dev, NULL);
+	dspi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(dspi->clk)) {
 		ret = -ENODEV;
 		goto free_master;
 	}
-	ret = clk_prepare_enable(dspi->clk);
-	if (ret)
-		goto free_master;
 
 	master->use_gpio_descriptors = true;
 	master->dev.of_node = pdev->dev.of_node;
@@ -968,7 +965,7 @@ static int davinci_spi_probe(struct platform_device *pdev)
 
 	ret = davinci_spi_request_dma(dspi);
 	if (ret == -EPROBE_DEFER) {
-		goto free_clk;
+		goto free_master;
 	} else if (ret) {
 		dev_info(&pdev->dev, "DMA is not supported (%d)\n", ret);
 		dspi->dma_rx = NULL;
@@ -1012,8 +1009,6 @@ static int davinci_spi_probe(struct platform_device *pdev)
 		dma_release_channel(dspi->dma_rx);
 		dma_release_channel(dspi->dma_tx);
 	}
-free_clk:
-	clk_disable_unprepare(dspi->clk);
 free_master:
 	spi_master_put(master);
 err:
@@ -1039,8 +1034,6 @@ static int davinci_spi_remove(struct platform_device *pdev)
 
 	spi_bitbang_stop(&dspi->bitbang);
 
-	clk_disable_unprepare(dspi->clk);
-
 	if (dspi->dma_rx) {
 		dma_release_channel(dspi->dma_rx);
 		dma_release_channel(dspi->dma_tx);
-- 
2.30.2


      parent reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-26 14:17 [PATCH v6 0/6] clk: provide new devm helpers for prepared and enabled clocks Uwe Kleine-König
2021-04-26 14:17 ` [PATCH v6 1/6] clk: generalize devm_clk_get() a bit Uwe Kleine-König
2021-04-26 14:17 ` [PATCH v6 2/6] clk: Provide new devm_clk_helpers for prepared and enabled clocks Uwe Kleine-König
2021-04-26 14:17 ` [PATCH v6 3/6] pwm: atmel: Simplify using devm_clk_get_prepared() Uwe Kleine-König
2021-04-26 14:17 ` [PATCH v6 4/6] rtc: at91sam9: Simplify using devm_clk_get_enabled() Uwe Kleine-König
2021-04-26 14:17 ` [PATCH v6 5/6] i2c: imx: " Uwe Kleine-König
2021-04-26 14:17 ` Uwe Kleine-König [this message]

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