From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
[ 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@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230306065733.2170662-2-u.kleine-koenig@xxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/spi/spi-imx.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index e4ccd0c329d06..6c9c87cd14cae 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);
--
2.39.2
