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hwrng: bcm2835 - handle of_iomap failures

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Check return value of of_iomap and handle errors correctly.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Arvind Yadav 2016-08-29 22:40:16 +05:30 committed by Herbert Xu
parent 10faa8c0d6
commit da59c51cf2
1 changed files with 3 additions and 2 deletions
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5
drivers/char/hw_random/bcm2835-rng.c
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@ -92,9 +92,10 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
bcm2835_rng_ops.priv = (unsigned long)rng_base; bcm2835_rng_ops.priv = (unsigned long)rng_base;
rng_id = of_match_node(bcm2835_rng_of_match, np); rng_id = of_match_node(bcm2835_rng_of_match, np);
if (!rng_id) if (!rng_id) {
iounmap(rng_base);
return -EINVAL; return -EINVAL;
}
/* Check for rng init function, execute it */ /* Check for rng init function, execute it */
rng_setup = rng_id->data; rng_setup = rng_id->data;
if (rng_setup) if (rng_setup)