Re: [PATCH igt 10/10] igt/gem_eio: i915.reset is no longer a boolean

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On Fri, Jul 28, 2017 at 01:08:08PM +0100, Chris Wilson wrote:
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
>  tests/gem_eio.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/gem_eio.c b/tests/gem_eio.c
> index 3c826626..15120842 100644
> --- a/tests/gem_eio.c
> +++ b/tests/gem_eio.c
> @@ -53,7 +53,7 @@ static bool i915_reset_control(bool enable)
>  	fd = open(path, O_RDWR);
>  	igt_require(fd >= 0);
>  
> -	ret = write(fd, &"NY"[enable], 1) == 1;
> +	ret = write(fd, &"01"[enable], 1) == 1;

That's a fun way of doing "itoa()" :) 
How about using helpers? We have igt_sysfs_set_parameter.

Other thing is the fact that we're leaving the machine in a non-default state
(global reset rather than per-engine reset).
We should actually restore the old value after the test.
I can also see that's "by design" (hang detector), but if we change the
behaviour of hang detector in the future, we may forget to modify gem_eio.

-Michał

>  	close(fd);
>  
>  	return ret;
> -- 
> 2.13.3
> 
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