Re: [PATCH] net: atm: Use IS_ENABLED in atm_dev_ioctl

[David Miller]

From: Nathan Chancellor <natechancellor@xxxxxxxxx>
Date: Thu,  7 Mar 2019 09:57:42 -0700

> When building with -Wsometimes-uninitialized, Clang warns:
> 
> net/atm/resources.c:256:6: warning: variable 'number' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
> net/atm/resources.c:212:7: warning: variable 'iobuf_len' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
> 
> Clang won't realize that compat is 0 when CONFIG_COMPAT is not set until
> the constant folding stage, which happens after this semantic analysis.
> Use IS_ENABLED instead so that the zero is present at the semantic
> analysis stage, which eliminates this warning.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/386
> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>

Applied, thanks.