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authorJonas Gorski <jonas.gorski@gmail.com>2019-02-19 13:16:08 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2019-02-28 14:17:58 +0800
commit984798de671a927ac73da31096a150df42e6aaf3 (patch)
treed3c9b3202635975b2f94403e0d13e0d41934e301 /drivers/char
parentef5c73b3384743efae6d6080154e189dc672359f (diff)
downloadlinux-984798de671a927ac73da31096a150df42e6aaf3.tar.bz2
hwrng: bcm2835 - fix probe as platform device
BCM63XX (MIPS) does not use device tree, so there cannot be any of_device_id, causing the driver to fail on probe: [ 0.904564] bcm2835-rng: probe of bcm63xx-rng failed with error -22 Fix this by checking for match data only if we are probing from device tree. Fixes: 8705f24f7b57 ("hwrng: bcm2835 - Enable BCM2835 RNG to work on BCM63xx platforms") Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hw_random/bcm2835-rng.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c
index 256b0b1d0f26..f759790c3cdb 100644
--- a/drivers/char/hw_random/bcm2835-rng.c
+++ b/drivers/char/hw_random/bcm2835-rng.c
@@ -168,14 +168,16 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
priv->rng.read = bcm2835_rng_read;
priv->rng.cleanup = bcm2835_rng_cleanup;
- rng_id = of_match_node(bcm2835_rng_of_match, np);
- if (!rng_id)
- return -EINVAL;
-
- /* Check for rng init function, execute it */
- of_data = rng_id->data;
- if (of_data)
- priv->mask_interrupts = of_data->mask_interrupts;
+ if (dev_of_node(dev)) {
+ rng_id = of_match_node(bcm2835_rng_of_match, np);
+ if (!rng_id)
+ return -EINVAL;
+
+ /* Check for rng init function, execute it */
+ of_data = rng_id->data;
+ if (of_data)
+ priv->mask_interrupts = of_data->mask_interrupts;
+ }
/* register driver */
err = devm_hwrng_register(dev, &priv->rng);