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| author | Claudiu Manoil <claudiu.manoil@nxp.com> | 2019-05-09 03:07:12 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-09 09:19:26 -0700 |
| commit | 7f4399ba405b6201fb318b43091703a34b1489ab (patch) | |
| tree | 9a9edb45a2ca9fcc0431f98f07f2ee7b86f5cebf /drivers/ptp | |
| parent | 5f05836831f6142081e216f27e1ae8f4b26d3585 (diff) | |
| download | linux-7f4399ba405b6201fb318b43091703a34b1489ab.tar.gz linux-7f4399ba405b6201fb318b43091703a34b1489ab.tar.bz2 linux-7f4399ba405b6201fb318b43091703a34b1489ab.zip | |
ptp_qoriq: fix NULL access if ptp dt node missing
Make sure ptp dt node exists before accessing it in case
of NULL pointer call trace.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/ptp')
| -rw-r--r-- | drivers/ptp/ptp_qoriq.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c index 53775362aac6..e10642403b25 100644 --- a/drivers/ptp/ptp_qoriq.c +++ b/drivers/ptp/ptp_qoriq.c @@ -467,6 +467,9 @@ int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base, unsigned long flags; u32 tmr_ctrl; + if (!node) + return -ENODEV; + ptp_qoriq->base = base; ptp_qoriq->caps = *caps; |