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| author | Jonas Gorski <jonas.gorski@gmail.com> | 2019-02-19 13:16:08 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-27 14:50:29 +0100 |
| commit | 25086ac92a31ce4504ecda7eac8aa762d7b81536 (patch) | |
| tree | 1de13c6c55425428f5a23e58e7f3576e576693fa /drivers/char | |
| parent | 3764bfae5056e95617b6ee074129297e11710886 (diff) | |
| download | linux-stable-25086ac92a31ce4504ecda7eac8aa762d7b81536.tar.gz linux-stable-25086ac92a31ce4504ecda7eac8aa762d7b81536.tar.bz2 linux-stable-25086ac92a31ce4504ecda7eac8aa762d7b81536.zip | |
hwrng: bcm2835 - fix probe as platform device
[ Upstream commit 984798de671a927ac73da31096a150df42e6aaf3 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/hw_random/bcm2835-rng.c | 18 |
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 6767d965c36c..19bde680aee1 100644 --- a/drivers/char/hw_random/bcm2835-rng.c +++ b/drivers/char/hw_random/bcm2835-rng.c @@ -171,14 +171,16 @@ 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); |