From: Arnd Bergmann
Date: Thu, 8 Dec 2016 22:57:05 +0100
> In some configurations, gcc cannot trace the state of variables
> across a spin_unlock() barrier, leading to a warning about
> correct code:
>
> xgene_enet_main.c: In function 'xgene_enet_start_xmit':
> ../../../phy/mdio-xgene.h:112:14:
In some configurations, gcc cannot trace the state of variables
across a spin_unlock() barrier, leading to a warning about
correct code:
xgene_enet_main.c: In function 'xgene_enet_start_xmit':
../../../phy/mdio-xgene.h:112:14: error: 'mss_index' may be used uninitialized
in this function [-Werror
