[Intel-gfx] [PATCH 3/4] drm/i915: Use unsigned long for obj->user_pin_count
Ville Syrjälä
ville.syrjala at linux.intel.com
Thu Oct 10 10:56:52 CEST 2013
On Wed, Oct 09, 2013 at 09:23:53PM +0200, Daniel Vetter wrote:
> At least on linux sizeof(long) == sizeof(void*) and the thinking
> is that you can grab about as many references as there's memory.
Well, there can be more memory than there is address space.
Unchecked counters always leave me a bit uneasy, so an explicit check
is what I'd prefer to see.
>
> Doesn't really matter, just a bit of OCD since the fixed size data
> type in a pure in-kernel datastructure look off.
>
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 7fa017b..f39a6b8 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1567,7 +1567,7 @@ struct drm_i915_gem_object {
> unsigned long *bit_17;
>
> /** User space pin count and filp owning the pin */
> - uint32_t user_pin_count;
> + unsigned long user_pin_count;
> struct drm_file *pin_filp;
>
> /** for phy allocated objects */
> --
> 1.8.1.4
--
Ville Syrjälä
Intel OTC
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