Hello Marc,
On 29/07/2019 11.41, kernel test robot wrote:
FYI, we noticed the following commit (built with gcc-7):
commit: 60649d4e0af6c26b6c423dea9c57f39e823fc0c5 ("can: remove obsolete empty
ioctl() handler")
https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
master
the kernel test robot is right.
The patch ("can: remove obsolete empty ioctl() handler") leads to a
return value of -EOPNOTSUPP instead of the former -ENOIOCTLCMD.
As we can see in socket.c ...
https://elixir.bootlin.com/linux/v5.3-rc2/source/net/socket.c#L1041
/*
* If this ioctl is unknown try to hand it down
* to the NIC driver.
*/
if (err != -ENOIOCTLCMD)
return err;
... we need to return -ENOIOCTLCMD to pass the SIOCGIFINDEX ioctl to the
NIC layer.
Therefore the entire commit needs to be *reverted* to restore the
required functionality.
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.c...@intel.com>
Many thanks,
Oliver
