[PATCH 2/3] driver: rng: Fix SMCCC TRNG crash
Weizhao Ouyang
o451686892 at gmail.com
Thu Jan 25 15:05:01 CET 2024
Fix a SMCCC TRNG null pointer crash due to a failed smccc feature
binding.
Signed-off-by: Weizhao Ouyang <o451686892 at gmail.com>
---
drivers/rng/smccc_trng.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/rng/smccc_trng.c b/drivers/rng/smccc_trng.c
index 3a4bb33941..3087cb991a 100644
--- a/drivers/rng/smccc_trng.c
+++ b/drivers/rng/smccc_trng.c
@@ -166,7 +166,7 @@ static int smccc_trng_probe(struct udevice *dev)
struct smccc_trng_priv *priv = dev_get_priv(dev);
struct arm_smccc_res res;
- if (!(smccc_trng_is_supported(smccc->invoke_fn)))
+ if (!smccc || !(smccc_trng_is_supported(smccc->invoke_fn)))
return -ENODEV;
/* At least one of 64bit and 32bit interfaces is available */
--
2.39.2
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