On Tue, May 19, 2020 at 12:40:37PM -0500, Dan Murphy wrote:
kbuild
On 5/19/20 12:19 PM, kbuild test robot wrote:
> Hi Dan,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on net-next/master]
> [also build test WARNING on robh/for-next sparc-next/master net/master linus/master
v5.7-rc6 next-20200518]
> [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/Dan-Murphy/DP83869-Enhancements/...
> base:
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
5cdfe8306631b2224e3f81fc5a1e2721c7a1948b
> config: sh-allmodconfig (attached as .config)
> compiler: sh4-linux-gcc (GCC) 9.3.0
> 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
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kbuild test robot <lkp(a)intel.com>
>
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
>
> drivers/net/phy/dp83869.c: In function 'dp83869_set_strapped_mode':
> > > drivers/net/phy/dp83869.c:171:10: warning: comparison is always false due
to limited range of data type [-Wtype-limits]
> 171 | if (val < 0)
This looks to be a false positive.
phy_read_mmd will return an errno or a value from 0->15
thanks, here because val
is defined as "u16 val", the comparison
to < 0 can not work as expected. Any err returned from phy_read_mmd,
which is int, will be converted to u16.
>
> So if errno is returned then this will be true.
>
> Unless I have to do IS_ERR.
>
> Dan
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