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[1/2] spi: imx: Don't skip cleanup in remove's error path

Message ID 20230306065733.2170662-2-u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Commit 11951c9e3f364d7ae3b568a0e52c8335d43066b5
Headers show
Series spi: imx: Fix cleanup in remove and convert to .remove_new() | expand

Commit Message

Uwe Kleine-König March 6, 2023, 6:57 a.m. UTC 
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>
---
 drivers/spi/spi-imx.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)
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Patch

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index e4ccd0c329d0..6c9c87cd14ca 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1856,13 +1856,11 @@  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);