spi: qup: Don't skip cleanup in remove's error path

[ Upstream commit 61f49171a43ab1f80c73c5c88c508770c461e0f2 ]

Returning early in a platform driver's remove callback is wrong. In this
case the dma resources are not released in the error path. this is never
retried later and so this is a permanent leak. To fix this, only skip
hardware disabling if waking the device fails.

Fixes: 64ff247a978f ("spi: Add Qualcomm QUP SPI controller support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230330210341.2459548-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index 678dc51..205e54f 100644 (file)
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -1277,18 +1277,22 @@ static int spi_qup_remove(struct platform_device *pdev)
        struct spi_qup *controller = spi_master_get_devdata(master);
        int ret;
 
-       ret = pm_runtime_resume_and_get(&pdev->dev);
-       if (ret < 0)
-               return ret;
+       ret = pm_runtime_get_sync(&pdev->dev);
 
-       ret = spi_qup_set_state(controller, QUP_STATE_RESET);
-       if (ret)
-               return ret;
+       if (ret >= 0) {
+               ret = spi_qup_set_state(controller, QUP_STATE_RESET);
+               if (ret)
+                       dev_warn(&pdev->dev, "failed to reset controller (%pe)\n",
+                                ERR_PTR(ret));
 
-       spi_qup_release_dma(master);
+               clk_disable_unprepare(controller->cclk);
+               clk_disable_unprepare(controller->iclk);
+       } else {
+               dev_warn(&pdev->dev, "failed to resume, skip hw disable (%pe)\n",
+                        ERR_PTR(ret));
+       }
 
-       clk_disable_unprepare(controller->cclk);
-       clk_disable_unprepare(controller->iclk);
+       spi_qup_release_dma(master);
 
        pm_runtime_put_noidle(&pdev->dev);
        pm_runtime_disable(&pdev->dev);