[PATCH v1] Moving init_completion before request_irq

[Kshitiz Varshney]

Issue:
While servicing interrupt, trying to access variable rng_op_done,
which is not yet initalized hence causing kernel to crash
while booting.

Fix:
Moving initialization of rng_op_done before request_irq.

Fixes: 1d5449445bd0 (hwrng: mx-rngc - add a driver for Freescale RNGC)
Signed-off-by: Kshitiz Varshney <kshitiz.varshney@xxxxxxx>
---
 drivers/char/hw_random/imx-rngc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c
index b05d676ca814..53e571c4f283 100644
--- a/drivers/char/hw_random/imx-rngc.c
+++ b/drivers/char/hw_random/imx-rngc.c
@@ -270,6 +270,8 @@ static int imx_rngc_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+	init_completion(&rngc->rng_op_done);
+
 	ret = devm_request_irq(&pdev->dev,
 			irq, imx_rngc_irq, 0, pdev->name, (void *)rngc);
 	if (ret) {
@@ -277,7 +279,6 @@ static int imx_rngc_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	init_completion(&rngc->rng_op_done);
 
 	rngc->rng.name = pdev->name;
 	rngc->rng.init = imx_rngc_init;
-- 
2.25.1