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path: root/drivers/nvdimm/bus.c
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Diffstat (limited to 'drivers/nvdimm/bus.c')
-rw-r--r--drivers/nvdimm/bus.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 5768a4749564..65ac1d3870f9 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -851,8 +851,10 @@ static int __nd_ioctl(struct nvdimm_bus *nvdimm_bus, struct nvdimm *nvdimm,
return -EFAULT;
}
- if (!desc || (desc->out_num + desc->in_num == 0) ||
- !test_bit(cmd, &cmd_mask))
+ if (!desc ||
+ (desc->out_num + desc->in_num == 0) ||
+ cmd > ND_CMD_CALL ||
+ !test_bit(cmd, &cmd_mask))
return -ENOTTY;
/* fail write commands (when read-only) */