Re: [PATCH net-next 11/12] ethtool: add timestamping related string sets

On Fri, Mar 27, 2020 at 02:55:36PM +0800, kbuild test robot wrote:

Hi Michal,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on next-20200326]
[cannot apply to net/master linus/master v5.6-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Michal-Kubecek/ethtool-netlink-interface-part-4/20200327-122420
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 5bb7357f45315138f623d08a615d23dd6ac26cf3
config: nds32-defconfig (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=9.2.0 make.cross ARCH=nds32 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <redacted>

All warnings (new ones prefixed by >>):

   net/core/dev_ioctl.c: In function 'net_hwtstamp_validate':

quoted

quoted

net/core/dev_ioctl.c:186:2: warning: enumeration value '__HWTSTAMP_TX_CNT' not handled in switch [-Wswitch]

     186 |  switch (tx_type) {
         |  ^~~~~~

quoted

quoted

net/core/dev_ioctl.c:195:2: warning: enumeration value '__HWTSTAMP_FILTER_CNT' not handled in switch [-Wswitch]

     195 |  switch (rx_filter) {
         |  ^~~~~~

(kbuild bot omitted netdev list)

Something like below (probably with a better comment text) should get
rid of this warning.

Michal

diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index dbaebbe573f0..547b587c1950 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c

@@ -190,6 +190,9 @@ static int net_hwtstamp_validate(struct ifreq *ifr)
 	case HWTSTAMP_TX_ONESTEP_P2P:
 		tx_type_valid = 1;
 		break;
+	case __HWTSTAMP_TX_CNT:
+		/* not a real value */
+		break;
 	}
 
 	switch (rx_filter) {

@@ -211,6 +214,9 @@ static int net_hwtstamp_validate(struct ifreq *ifr)
 	case HWTSTAMP_FILTER_NTP_ALL:
 		rx_filter_valid = 1;
 		break;
+	case __HWTSTAMP_FILTER_CNT:
+		/* not a real value */
+		break;
 	}
 
 	if (!tx_type_valid || !rx_filter_valid)