[PATCH v2 1/3] drm/i915: Improve readability of eb_relocate_vma

[Krzysztof Karas]

Hi Sebastian,

> +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> @@ -1529,6 +1529,7 @@ static int eb_relocate_vma(struct i915_execbuffer *eb, struct eb_vma *ev)
>  	struct drm_i915_gem_relocation_entry __user *urelocs =
>  		u64_to_user_ptr(entry->relocs_ptr);
>  	unsigned long remain = entry->relocation_count;
> +	int ret = 0;
>  
>  	if (unlikely(remain > N_RELOC(INT_MAX)))
>  		return -EINVAL;
> @@ -1541,11 +1542,10 @@ static int eb_relocate_vma(struct i915_execbuffer *eb, struct eb_vma *ev)
>  	if (unlikely(!access_ok(urelocs, remain * sizeof(*urelocs))))
>  		return -EFAULT;
>  
> -	do {
> -		struct drm_i915_gem_relocation_entry *r = stack;
> -		unsigned int count =
> -			min_t(unsigned long, remain, ARRAY_SIZE(stack));
> +	while (remain > 0) {
Is it possible for "remain" variable to be initialized to 0?
If that would be the case then after your change we'd skip this
loop entirely, where previously we'd run at least one iteration.
Would that be a problem?

Apart from that, I like that you removed the empty "if" and
reduced indentation :)

-- 
Best Regards,
Krzysztof