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

[ Upstream commit 11951c9e3f364d7ae3b568a0e52c8335d43066b5 ]

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: d593574aff0a ("spi: imx: do not access registers while clocks disabled")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230306065733.2170662-2-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-imx.c b/drivers/spi/spi-imx.c
index d209930..fbd7b35 100644 (file)
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1864,13 +1864,11 @@ static int spi_imx_remove(struct platform_device *pdev)
 
        spi_unregister_controller(controller);
 
-       ret = pm_runtime_resume_and_get(spi_imx->dev);
-       if (ret < 0) {
-               dev_err(spi_imx->dev, "failed to enable clock\n");
-               return ret;
-       }
-
-       writel(0, spi_imx->base + MXC_CSPICTRL);
+       ret = pm_runtime_get_sync(spi_imx->dev);
+       if (ret >= 0)
+               writel(0, spi_imx->base + MXC_CSPICTRL);
+       else
+               dev_warn(spi_imx->dev, "failed to enable clock, skip hw disable\n");
 
        pm_runtime_dont_use_autosuspend(spi_imx->dev);
        pm_runtime_put_sync(spi_imx->dev);