diff options
author | Julia Lawall <Julia.Lawall@lip6.fr> | 2019-02-23 14:20:39 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-05 22:29:08 +0200 |
commit | fd3f750427702f30293d662dc7a3dc985571b032 (patch) | |
tree | 6054e13b896311be423bcc9d699cd3490ffd40b5 /drivers | |
parent | a6958075ea4d8a8b1448880c83b98a2631aff5f3 (diff) |
crypto: crypto4xx - add missing of_node_put after of_device_is_available
[ Upstream commit 8c2b43d2d85b48a97d2f8279278a4aac5b45f925 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/crypto/amcc/crypto4xx_trng.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_trng.c b/drivers/crypto/amcc/crypto4xx_trng.c index 677ca17fd223..368c5599515e 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); |