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

[ Upstream commit 61f49171a4 ]

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: 64ff247a97 ("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>
This commit is contained in:
Uwe Kleine-König 2023-03-30 23:03:40 +02:00 committed by Greg Kroah-Hartman
parent 5e678bfebb
commit 2d0f63077f
1 changed files with 13 additions and 9 deletions
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22
drivers/spi/spi-qup.c
View File

@ -1277,19 +1277,23 @@ 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));
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));
}
spi_qup_release_dma(master);
clk_disable_unprepare(controller->cclk);
clk_disable_unprepare(controller->iclk);
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_disable(&pdev->dev);