Hi Pavana,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on net-next/master net/master linus/master v5.10-rc4 next-20201119]
[cannot apply to sparc-next/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Pavana-Sharma/Add-support-for-mv88e6393x-family-of-Marvell/20201119-160915
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: x86_64-randconfig-a004-20201119 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project b2613fb2f0f53691dd0211895afbb9413457fca7)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/2b347d8ede029475baf73ac8e08ea38dad2526e4
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Pavana-Sharma/Add-support-for-mv88e6393x-family-of-Marvell/20201119-160915
        git checkout 2b347d8ede029475baf73ac8e08ea38dad2526e4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/net/dsa/mv88e6xxx/serdes.c:1212:5: warning: ISO C90 forbids mixing declarations and code [-Wdeclaration-after-statement]
           u8 cmode = chip->ports[port].cmode;
              ^
   1 warning generated.

vim +1212 drivers/net/dsa/mv88e6xxx/serdes.c

  1205	
  1206	int mv88e6393x_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
  1207			    bool on)
  1208	{
  1209		if (port != 0 && port != 9 && port != 10)
  1210			return -EOPNOTSUPP;
  1211	
> 1212		u8 cmode = chip->ports[port].cmode;

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org