[Intel-gfx] [PATCH i-g-t 1/2] lib/kmod: Fail if the module is already loaded

[Michał Winiarski]

On Wed, Jul 11, 2018 at 09:46:18AM +0100, Chris Wilson wrote:
> If we want to set new module options, we must load the module or die
> trying. We may want to always fail if the module if already loaded, but
> for now, take the small incremental step and insist that the options are
> set if requested.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Reviewed-by: Michał Winiarski <michal.winiarski at intel.com>

-Michał

> ---
>  lib/igt_kmod.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/igt_kmod.c b/lib/igt_kmod.c
> index 4f70e30d9..f3f34a62d 100644
> --- a/lib/igt_kmod.c
> +++ b/lib/igt_kmod.c
> @@ -141,7 +141,13 @@ out:
>  
>  static int modprobe(struct kmod_module *kmod, const char *options)
>  {
> -	return kmod_module_probe_insert_module(kmod, 0, options,
> +	unsigned int flags;
> +
> +	flags = 0;
> +	if (options) /* force a fresh load to set the new options */
> +		flags |= KMOD_PROBE_FAIL_ON_LOADED;
> +
> +	return kmod_module_probe_insert_module(kmod, flags, options,
>  					       NULL, NULL, NULL);
>  }
>  
> -- 
> 2.18.0
> 
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