[Intel-gfx] [PATCH] drm/i915/gt: Onion unwind for scratch page allocation failure

[Matthew Auld]

On 19/10/2020 09:34, Chris Wilson wrote:
> In switching to using objects for our ppGTT scratch pages, care was not
> taken to avoid trying to unref NULL objects on failure. And for gen6
> ppGTT, it appears we forgot entirely to unwind after a partial allocation
> failure.
> 
> Fixes: 89351925a477 ("drm/i915/gt: Switch to object allocations for page directories")
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Matthew Auld <matthew.auld at intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld at intel.com>