Fix a SMCCC TRNG null pointer crash due to a failed smccc feature binding.
Fixes: 53355bb86c25 ("drivers: rng: add smccc trng driver") Reviewed-by: Heinrich Schuchardt xypron.glpk@gmx.de Signed-off-by: Weizhao Ouyang o451686892@gmail.com --- v3: add Fixes tag --- 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 */