[PATCH 5.2 020/162] spi: pxa2xx: Balance runtime PM enable/disable on error

From: Greg Kroah-Hartman
Date: Tue Aug 27 2019 - 04:10:43 EST

[ Upstream commit 1274204542f683e1d8491ebe9cc86284d5a8ebcc ]

Don't undo the PM initialization if we error out before we managed to
initialize it. The call to pm_runtime_disable() without being preceded
by pm_runtime_enable() would disturb the balance of the Force.

In practice, this happens if we fail to allocate any of the GPIOS ("cs",
"ready") due to -EPROBE_DEFER because we're getting probled before the
GPIO driver.

Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>
Link: https://lore.kernel.org/r/20190719122713.3444318-1-lkundrak@xxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
drivers/spi/spi-pxa2xx.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index af3f37ba82c83..c1af8887d9186 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1817,14 +1817,16 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
status = devm_spi_register_controller(&pdev->dev, controller);
if (status != 0) {
dev_err(&pdev->dev, "problem registering spi controller\n");
- goto out_error_clock_enabled;
+ goto out_error_pm_runtime_enabled;

return status;