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-rw-r--r--drivers/ptp/ptp_chardev.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
index 3f7a74788802..e95a6ed130ef 100644
--- a/drivers/ptp/ptp_chardev.c
+++ b/drivers/ptp/ptp_chardev.c
@@ -176,6 +176,8 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd,
int enable, err = 0;
tsevq = pccontext->private_clkdata;
+ if (!tsevq)
+ return -EINVAL;
switch (cmd) {