[PATCH 1/6] spi: cadence-quadspi: fix runtime pm disable imbalance on probe failure

[Johan Hovold <johan@kernel.org>]

A recent attempt to fix the probe error handling introduced a runtime PM
disable depth imbalance by incorrectly disabling runtime PM on early
failures (e.g. probe deferral).

Fixes: f18c8cfa4f1a ("spi: cadence-qspi: Fix probe error path and remove")
Cc: stable@vger.kernel.org	# 7.0
Cc: Miquel Raynal (Schneider Electric) <miquel.raynal@bootlin.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/spi/spi-cadence-quadspi.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 50ef65fc5ded..5040e4e1cce0 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1871,7 +1871,7 @@ static int cqspi_probe(struct platform_device *pdev)
 	ret = clk_bulk_prepare_enable(CLK_QSPI_NUM, cqspi->clks);
 	if (ret) {
 		dev_err(dev, "Cannot enable QSPI clocks.\n");
-		goto disable_rpm;
+		return ret;
 	}
 
 	/* Obtain QSPI reset control */
@@ -1981,7 +1981,7 @@ static int cqspi_probe(struct platform_device *pdev)
 		ret = cqspi_request_mmap_dma(cqspi);
 		if (ret == -EPROBE_DEFER) {
 			dev_err_probe(&pdev->dev, ret, "Failed to request mmap DMA\n");
-			goto disable_controller;
+			goto disable_rpm;
 		}
 	}
 
@@ -1999,14 +1999,13 @@ static int cqspi_probe(struct platform_device *pdev)
 release_dma_chan:
 	if (cqspi->rx_chan)
 		dma_release_channel(cqspi->rx_chan);
-disable_controller:
+disable_rpm:
+	if (!(ddata && (ddata->quirks & CQSPI_DISABLE_RUNTIME_PM)))
+		pm_runtime_disable(dev);
 	cqspi_controller_enable(cqspi, 0);
 disable_clks:
 	if (pm_runtime_get_sync(&pdev->dev) >= 0)
 		clk_bulk_disable_unprepare(CLK_QSPI_NUM, cqspi->clks);
-disable_rpm:
-	if (!(ddata && (ddata->quirks & CQSPI_DISABLE_RUNTIME_PM)))
-		pm_runtime_disable(dev);
 
 	return ret;
 }
-- 
2.52.0