Passing (void*)val instead of would make a pointer out of an integer
and cause sock_setsockopt to -EFAULT.
See tools/testing/selftests/networking/timestamping/timestamping.c
for a working example.
Cc: David S. Miller
Cc: netdev@vger.kernel.org
Signed-off-by: Ahmad Fatoum
---
Documentation/networking/timestamping.txt | 6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/Documentation/networking/timestamping.txt
b/Documentation/networking/timestamping.txt
index 196ba17cc344..1be0b6f9e0cb 100644
--- a/Documentation/networking/timestamping.txt
+++ b/Documentation/networking/timestamping.txt
@@ -44,8 +44,7 @@ timeval of SO_TIMESTAMP (ms).
Supports multiple types of timestamp requests. As a result, this
socket option takes a bitmap of flags, not a boolean. In
- err = setsockopt(fd, SOL_SOCKET, SO_TIMESTAMPING, (void *) val,
- sizeof(val));
+ err = setsockopt(fd, SOL_SOCKET, SO_TIMESTAMPING, , sizeof(val));
val is an integer with any of the following bits set. Setting other
bit returns EINVAL and does not change the current state.
@@ -249,8 +248,7 @@ setsockopt to receive timestamps:
__u32 val = SOF_TIMESTAMPING_SOFTWARE |
SOF_TIMESTAMPING_OPT_ID /* or any other flag */;
- err = setsockopt(fd, SOL_SOCKET, SO_TIMESTAMPING, (void *) val,
- sizeof(val));
+ err = setsockopt(fd, SOL_SOCKET, SO_TIMESTAMPING, , sizeof(val));
1.4 Bytestream Timestamps
--
2.13.2