[PATCH 3/9] drm/i915: WARN on unexpected return from drm_mm

[Ben Widawsky <benjamin.widawsky@intel.com>]

We only actually want to retry if the failure mode was not enough space,
and so we'll evict. This will help us realize quickly in case we missed
a change in the common drm code.

NOTE: A similar check is already in place for the GEN7 PPGTT code.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_gem.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 2a07fa1..b6965a2 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3233,6 +3233,9 @@ i915_gem_find_vm_space(struct i915_address_space *vm,
 						  DRM_MM_SEARCH_DEFAULT,
 						  DRM_MM_CREATE_DEFAULT);
 	if (ret) {
+		if (WARN_ON(ret != -ENOSPC))
+			return ret;
+
 		ret = i915_gem_evict_something(vm->dev, vm, size, align, color,
 					       flags);
 		if (ret == 0)
-- 
1.9.2