From c59a1d41672a89b5cac49db1a472ff889e35a2d2 Mon Sep 17 00:00:00 2001
From: Iuliana Prodan <iuliana.prodan@nxp.com>
Date: Wed, 31 Jul 2019 16:08:12 +0300
Subject: [PATCH] crypto: caam - free resources in case caam_rng registration failed
Git-commit: c59a1d41672a89b5cac49db1a472ff889e35a2d2
Patch-mainline: v5.4-rc1
References: bsc#1051510
Check the return value of the hardware registration for caam_rng and free
resources in case of failure.
Fixes: e24f7c9e87d4 ("crypto: caam - hwrng support")
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geanta <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/crypto/caam/caamrng.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/crypto/caam/caamrng.c
+++ b/drivers/crypto/caam/caamrng.c
@@ -361,7 +361,10 @@ static int __init caam_rng_init(void)
put_device(&pdev->dev);
dev_info(dev, "registering rng-caam\n");
- return hwrng_register(&caam_rng);
+
+ err = hwrng_register(&caam_rng);
+ if (!err)
+ return err;
free_rng_ctx:
kfree(rng_ctx);