Re: [PATCH 03/13] x86/microcode/AMD: Clean up find_equiv_id()

[Thomas Gleixner]

On Tue, 17 Jan 2017, Borislav Petkov wrote:
> +     for (; equiv_table && equiv_table->installed_cpu; equiv_table++)
> +             if (sig == equiv_table->installed_cpu)
> +                     return equiv_table->equiv_cpu;

This would be perfect if you just kept the braces around the for loop.

        for (; cond; incr)
                do_something();

parses perfectly fine as it matches the expectation of a single line statement
following the for().

        for (; cond; incr)
                if (othercond)
                        do_something();

not so much because we expect a single line statement due to the lack of a
opening brace after the for()

        for (; cond; incr) {
                if (othercond)
                        do_something();
        }

That's how it parses best. The opening brace after the for() tells us: here
comes a multiline statement. And the inner if (othercond) w/o the opening
brace tells: here comes a single line statement.

Reading code/patches very much depends on patterns and structuring. If they
are consistent the reading flow is undisturbed.

Thanks,

        tglx