[PATCH v5 3/4] media: imagination: e5010: Move e5010_init_device to Runtime Resume Hook

[b-brnich]

From: Brandon Brnich <b-brnich@xxxxxx>

The PM framework skips the runtime resume hook if the device was never on
in the first place. This results in a crash in the system resume hook when
a call to e5010_init_device attempts a write to a powered down device.

Move e5010_init_device to the resume hook to ensure register write only
occurs when device is properly powered on.

Fixes: a1e294045885 ("media: imagination: Add E5010 JPEG Encoder driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Brandon Brnich <b-brnich@xxxxxx>
Reviewed-by: Jai Luthra <jai.luthra@xxxxxxxxxxxxxxxx>
Reviewed-by: Kendall Willis <k-willis@xxxxxx>
Reviewed-by: Devarsh Thakkar <devarsht@xxxxxx>
---
 drivers/media/platform/imagination/e5010-jpeg-enc.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/imagination/e5010-jpeg-enc.c b/drivers/media/platform/imagination/e5010-jpeg-enc.c
index b8e24f816648d..c25ab9627518e 100644
--- a/drivers/media/platform/imagination/e5010-jpeg-enc.c
+++ b/drivers/media/platform/imagination/e5010-jpeg-enc.c
@@ -1516,6 +1516,13 @@ static int e5010_runtime_resume(struct device *dev)
 		return ret;
 	}
 
+	ret = e5010_init_device(e5010);
+	if (ret) {
+		dev_err(dev, "Failed to re-enable e5010 device\n");
+		clk_disable_unprepare(e5010->clk);
+		return ret;
+	}
+
 	return 0;
 }
 
@@ -1548,12 +1555,6 @@ static int e5010_resume(struct device *dev)
 	if (ret < 0)
 		return ret;
 
-	ret = e5010_init_device(e5010);
-	if (ret) {
-		dev_err(dev, "Failed to re-enable e5010 device\n");
-		return ret;
-	}
-
 	v4l2_m2m_resume(e5010->m2m_dev);
 
 	return ret;
-- 
2.43.0