Kalle Valo <kvalo(a)codeaurora.org> writes:
>
> + linux-wireless
>
> kbuild test robot <lkp(a)intel.com> writes:
>
> > tree:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> master
> > head: e098d7762d602be640c53565ceca342f81e55ad2
> > commit: 5ad4d8957b69f3ebf95ac02212c388bda75aeb30 [2957/8703]
> rtw88:
> > set power trim according to efuse PG values
> > config: i386-randconfig-a002-20200514 (attached as .config)
> > compiler: gcc-4.9 (Ubuntu 4.9.3-13ubuntu2) 4.9.3
> > reproduce:
> > git checkout 5ad4d8957b69f3ebf95ac02212c388bda75aeb30
> > # save the attached .config to linux build tree
> > make ARCH=i386
> >
> > 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/wireless/realtek/rtw88/rtw8822c.c: In function
> 'rtw8822c_power_trim':
> >>> drivers/net/wireless/realtek/rtw88/rtw8822c.c:1039:2: warning:
> >> missing braces around initializer [-Wmissing-braces]
> > s8 bb_gain[2][8] = {0};
> > ^
> > drivers/net/wireless/realtek/rtw88/rtw8822c.c:1039:2: warning: (near
> > initialization for 'bb_gain[0]') [-Wmissing-braces]
>
> Tony, please check this and fix it. If it's a false warning please let
> us know.
>
I tried to re-pro by:
git checkout 5ad4d8957b69f3ebf95ac02212c388bda75aeb30
# save the attached .config to linux build tree
make ARCH=i386
But cannot see it. And I checked the code, looks fine to me.
It seems to be a false warning.
Hi, what's your compiler? we can reproduce by gcc-4.9 and follow above steps.
From
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119 , the warning should be only on
old compilers.
If made below change, the warning will disappear.
@@ -1036,7 +1036,7 @@ static void rtw8822c_set_power_trim(struct rtw_dev *rtwdev, s8
bb_gain[2][8])
static void rtw8822c_power_trim(struct rtw_dev *rtwdev)
{
u8 pg_pwr = 0xff, i, path, idx;
- s8 bb_gain[2][8] = {0};
+ s8 bb_gain[2][8] = {};
u16 rf_efuse_2g[3] = {PPG_2GL_TXAB, PPG_2GM_TXAB, PPG_2GH_TXAB};
Similar fix could be seen, as an example, on
https://lkml.org/lkml/2017/9/12/159
>
> Yen-Hsuan
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