mips: warning in net/mac80211/tx.c

mips: warning in net/mac80211/tx.c

[Arend van Spriel]

Hi Johannes,

I played with crosstool-ng to compile test our driver for a number of
platforms that it is supposed to work on. The gcc version is 4.7.2.

*mips*:
  CC [M]  net/mac80211/tx.o
net/mac80211/tx.c: In function 'ieee80211_subif_start_xmit':
net/mac80211/tx.c:1797:22: error: 'chanctx_conf' may be used
uninitialized in this function [-Werror=maybe-uninitialized]

Gr. AvS

Re: mips: warning in net/mac80211/tx.c

[Johannes Berg]

On Sun, 2012-11-25 at 13:23 +0100, Arend van Spriel wrote:
> Hi Johannes,
> 
> I played with crosstool-ng to compile test our driver for a number of
> platforms that it is supposed to work on. The gcc version is 4.7.2.
> 
> *mips*:
>   CC [M]  net/mac80211/tx.o
> net/mac80211/tx.c: In function 'ieee80211_subif_start_xmit':
> net/mac80211/tx.c:1797:22: error: 'chanctx_conf' may be used
> uninitialized in this function [-Werror=maybe-uninitialized]

Yeah it seems to randomly throw this warning under certain
circumstances, sometimes gcc doesn't seem to be able to prove that in
fact it *isn't* used uninitialized.

I think we should just leave the warning though, anything else I could
come up with to suppress it would just cause real ones to be suppressed
as well if somebody changes this code.

johannes