From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
[ 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@pengutron... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 980cd168fe4c8..2f06f2840d616 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -1769,13 +1769,11 @@ static int spi_imx_remove(struct platform_device *pdev)
spi_bitbang_stop(&spi_imx->bitbang);
- 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);