spi: atmel-quadspi: Use devm_ clock management

Commit Message

Bence Csókás Dec. 19, 2024, 2:28 p.m. UTC

Clean up error handling by using the new devm_
clock handling functions. This should make it
easier to add new code, as we can eliminate the
"goto ladder" in probe().

Signed-off-by: Bence Csókás <[e-mail]>
---
 drivers/spi/atmel-quadspi.c | 42 ++++++++++---------------------------
 1 file changed, 11 insertions(+), 31 deletions(-)

Comments

Mark Brown Jan. 7, 2025, 11:58 a.m. UTC | #1

On Thu, 19 Dec 2024 15:28:51 +0100, Bence Csókás wrote:
> Clean up error handling by using the new devm_
> clock handling functions. This should make it
> easier to add new code, as we can eliminate the
> "goto ladder" in probe().
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] spi: atmel-quadspi: Use devm_ clock management
      commit: a38509fd5cdc125ef54562760a05c68ebd4812bc

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

Patch

diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c
index 73cf0c3f1477..0353f8e1384d 100644
--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -1381,50 +1381,37 @@  static int atmel_qspi_probe(struct platform_device *pdev)
 	aq->mmap_phys_base = (dma_addr_t)res->start;
 
 	/* Get the peripheral clock */
-	aq->pclk = devm_clk_get(&pdev->dev, "pclk");
+	aq->pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
 	if (IS_ERR(aq->pclk))
-		aq->pclk = devm_clk_get(&pdev->dev, NULL);
+		aq->pclk = devm_clk_get_enabled(&pdev->dev, NULL);
 
 	if (IS_ERR(aq->pclk))
 		return dev_err_probe(&pdev->dev, PTR_ERR(aq->pclk),
 				     "missing peripheral clock\n");
 
-	/* Enable the peripheral clock */
-	err = clk_prepare_enable(aq->pclk);
-	if (err)
-		return dev_err_probe(&pdev->dev, err,
-				     "failed to enable the peripheral clock\n");
-
 	if (aq->caps->has_qspick) {
 		/* Get the QSPI system clock */
-		aq->qspick = devm_clk_get(&pdev->dev, "qspick");
+		aq->qspick = devm_clk_get_enabled(&pdev->dev, "qspick");
 		if (IS_ERR(aq->qspick)) {
 			dev_err(&pdev->dev, "missing system clock\n");
 			err = PTR_ERR(aq->qspick);
-			goto disable_pclk;
+			return err;
 		}
 
-		/* Enable the QSPI system clock */
-		err = clk_prepare_enable(aq->qspick);
-		if (err) {
-			dev_err(&pdev->dev,
-				"failed to enable the QSPI system clock\n");
-			goto disable_pclk;
-		}
 	} else if (aq->caps->has_gclk) {
 		/* Get the QSPI generic clock */
 		aq->gclk = devm_clk_get(&pdev->dev, "gclk");
 		if (IS_ERR(aq->gclk)) {
 			dev_err(&pdev->dev, "missing Generic clock\n");
 			err = PTR_ERR(aq->gclk);
-			goto disable_pclk;
+			return err;
 		}
 	}
 
 	if (aq->caps->has_dma) {
 		err = atmel_qspi_dma_init(ctrl);
 		if (err == -EPROBE_DEFER)
-			goto disable_qspick;
+			return err;
 	}
 
 	/* Request the IRQ */
@@ -1464,10 +1451,6 @@  static int atmel_qspi_probe(struct platform_device *pdev)
 dma_release:
 	if (aq->caps->has_dma)
 		atmel_qspi_dma_release(aq);
-disable_qspick:
-	clk_disable_unprepare(aq->qspick);
-disable_pclk:
-	clk_disable_unprepare(aq->pclk);
 
 	return err;
 }
@@ -1506,7 +1489,6 @@  static int atmel_qspi_sama7g5_suspend(struct atmel_qspi *aq)
 	if (ret)
 		return ret;
 
-	clk_disable_unprepare(aq->pclk);
 	return 0;
 }
 
@@ -1531,8 +1513,6 @@  static void atmel_qspi_remove(struct platform_device *pdev)
 		}
 
 		atmel_qspi_write(QSPI_CR_QSPIDIS, aq, QSPI_CR);
-		clk_disable(aq->qspick);
-		clk_disable(aq->pclk);
 	} else {
 		/*
 		 * atmel_qspi_runtime_{suspend,resume} just disable and enable
@@ -1542,9 +1522,6 @@  static void atmel_qspi_remove(struct platform_device *pdev)
 		dev_warn(&pdev->dev, "Failed to resume device on remove\n");
 	}
 
-	clk_unprepare(aq->qspick);
-	clk_unprepare(aq->pclk);
-
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
@@ -1560,8 +1537,11 @@  static int __maybe_unused atmel_qspi_suspend(struct device *dev)
 	if (ret < 0)
 		return ret;
 
-	if (aq->caps->has_gclk)
-		return atmel_qspi_sama7g5_suspend(aq);
+	if (aq->caps->has_gclk) {
+		ret = atmel_qspi_sama7g5_suspend(aq);
+		clk_disable_unprepare(aq->pclk);
+		return ret;
+	}
 
 	atmel_qspi_write(QSPI_CR_QSPIDIS, aq, QSPI_CR);