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authorJulia Lawall <Julia.Lawall@lip6.fr>2019-02-23 14:20:39 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2019-02-28 14:37:35 +0800
commit8c2b43d2d85b48a97d2f8279278a4aac5b45f925 (patch)
treea95e7b9f200e11e0a90f280060e14c787e4bd5b5 /drivers/crypto/amcc
parent41798036430015ad45137db2d4c213cd77fd0251 (diff)
crypto: crypto4xx - add missing of_node_put after of_device_is_available
Add an of_node_put when a tested device node is not available. The semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ identifier f; local idexpression e; expression x; @@ e = f(...); ... when != of_node_put(e) when != x = e when != e = x when any if (<+...of_device_is_available(e)...+>) { ... when != of_node_put(e) ( return e; | + of_node_put(e); return ...; ) } // </smpl> Fixes: 5343e674f32fb ("crypto4xx: integrate ppc4xx-rng into crypto4xx") Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/amcc')
-rw-r--r--drivers/crypto/amcc/crypto4xx_trng.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_trng.c b/drivers/crypto/amcc/crypto4xx_trng.c
index 5e63742b0d22..53ab1f140a26 100644
--- a/drivers/crypto/amcc/crypto4xx_trng.c
+++ b/drivers/crypto/amcc/crypto4xx_trng.c
@@ -80,8 +80,10 @@ void ppc4xx_trng_probe(struct crypto4xx_core_device *core_dev)
/* Find the TRNG device node and map it */
trng = of_find_matching_node(NULL, ppc4xx_trng_match);
- if (!trng || !of_device_is_available(trng))
+ if (!trng || !of_device_is_available(trng)) {
+ of_node_put(trng);
return;
+ }
dev->trng_base = of_iomap(trng, 0);
of_node_put(trng);