Re: [PATCH net-next v2] ptp: ocp: Avoid operator precedence warning in ptp_ocp_summary_show()

[Jonathan Lemon]

On Thu, Sep 16, 2021 at 09:52:05PM -0700, Nathan Chancellor wrote:
> Clang warns twice:
> 
> drivers/ptp/ptp_ocp.c:2065:16: error: operator '?:' has lower precedence
> than '&'; '&' will be evaluated first
> [-Werror,-Wbitwise-conditional-parentheses]
>                            on & map ? " ON" : "OFF", src);
>                            ~~~~~~~~ ^
> drivers/ptp/ptp_ocp.c:2065:16: note: place parentheses around the '&'
> expression to silence this warning
>                            on & map ? " ON" : "OFF", src);
>                                     ^
>                            (       )
> drivers/ptp/ptp_ocp.c:2065:16: note: place parentheses around the '?:'
> expression to evaluate it first
>                            on & map ? " ON" : "OFF", src);
>                                     ^
> 
> on and map are both booleans so this should be a logical AND, which
> clears up the operator precedence issue.
> 
> Fixes: a62a56d04e63 ("ptp: ocp: Enable 4th timestamper / PPS generator")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1457
> Suggested-by: Jonathan Lemon <jonathan.lemon@xxxxxxxxx>
> Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>

Acked-by: Jonathan Lemon <jonathan.lemon@xxxxxxxxx>