[PATCH v3] media: atmel: atmel-isc: Fix PM disable depth imbalance in atmel_isc_probe

[Miaoqian Lin]

The pm_runtime_enable will decrease power disable depth.
If the probe fails, we should use pm_runtime_disable() to balance
pm_runtime_enable().

Fixes: 0a0e265 ("media: atmel: atmel-isc: split driver into driver base and isc")
Signed-off-by: Miaoqian Lin <linmq006 at gmail.com>
---
changes in v2:
- remove unused label.
changes in v3:
- add disable_pm label and update related 'goto'
- update commit message
---
 drivers/media/platform/atmel/atmel-sama5d2-isc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
index 1b2063cce0f7..949035cdb846 100644
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -538,7 +538,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
 	ret = clk_prepare_enable(isc->ispck);
 	if (ret) {
 		dev_err(dev, "failed to enable ispck: %d\n", ret);
-		goto cleanup_subdev;
+		goto disable_pm;
 	}
 
 	/* ispck should be greater or equal to hclock */
@@ -556,6 +556,9 @@ static int atmel_isc_probe(struct platform_device *pdev)
 unprepare_clk:
 	clk_disable_unprepare(isc->ispck);
 
+disable_pm:
+	pm_runtime_disable(dev);
+
 cleanup_subdev:
 	isc_subdev_cleanup(isc);
 
-- 
2.17.1