Re: [PATCH] net: ethernet: sun: Zero initialize class in default case in niu_add_ethtool_tcam_entry

[David Miller]

From: Nathan Chancellor <natechancellor@xxxxxxxxx>
Date: Thu,  7 Mar 2019 16:29:33 -0700

> When building with -Wsometimes-uninitialized, Clang warns:
> 
> drivers/net/ethernet/sun/niu.c:7466:5: warning: variable 'class' is used
> uninitialized whenever switch default is taken
> [-Wsometimes-uninitialized]
> 
> The default case can never happen because i can only be 0 to 3
> (NIU_L3_PROG_CLS is defined as 4). To make this clear to Clang,
> just zero initialize class in the default case (use the macro
> CLASS_CODE_UNRECOG to make it clear this shouldn't happen).
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/403
> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>

Applied, thanks.