spi: zynqmp-gqspi: fix clock imbalance on probe failure

[ Upstream commit 1527b076ae2cb6a9c590a02725ed39399fcad1cf ]

Make sure that the device is not runtime suspended before explicitly
disabling the clocks on probe failure and on driver unbind to avoid a
clock enable-count imbalance.

Fixes: 9e3a000362ae ("spi: zynqmp: Add pm runtime support")
Cc: stable@vger.kernel.org	# 4.19
Cc: Naga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>
Cc: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/Message-Id:
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index c760aac..3b56d5e 100644 (file)
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -1218,9 +1218,9 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
        return 0;
 
 clk_dis_all:
-       pm_runtime_put_sync(&pdev->dev);
-       pm_runtime_set_suspended(&pdev->dev);
        pm_runtime_disable(&pdev->dev);
+       pm_runtime_put_noidle(&pdev->dev);
+       pm_runtime_set_suspended(&pdev->dev);
        clk_disable_unprepare(xqspi->refclk);
 clk_dis_pclk:
        clk_disable_unprepare(xqspi->pclk);
@@ -1244,11 +1244,15 @@ static int zynqmp_qspi_remove(struct platform_device *pdev)
 {
        struct zynqmp_qspi *xqspi = platform_get_drvdata(pdev);
 
+       pm_runtime_get_sync(&pdev->dev);
+
        zynqmp_gqspi_write(xqspi, GQSPI_EN_OFST, 0x0);
+
+       pm_runtime_disable(&pdev->dev);
+       pm_runtime_put_noidle(&pdev->dev);
+       pm_runtime_set_suspended(&pdev->dev);
        clk_disable_unprepare(xqspi->refclk);
        clk_disable_unprepare(xqspi->pclk);
-       pm_runtime_set_suspended(&pdev->dev);
-       pm_runtime_disable(&pdev->dev);
 
        return 0;
 }