From 1c5a907180365d0842c17fb15977ad426d429c14 Mon Sep 17 00:00:00 2001
From: Michal Wajdeczko <michal.wajdeczko@intel.com>
Date: Mon, 6 Nov 2017 13:51:54 +0000
Subject: [PATCH] drm/i915/guc: Assert ctch->vma is allocated
Git-commit: 1c5a907180365d0842c17fb15977ad426d429c14
Patch-mainline: v4.16-rc1
References: FATE#322643 bsc#1055900

Silence smatch by demonstrating that ctch->vma is allocated
following a successful chch_init()

drivers/gpu/drm/i915/intel_guc_ct.c:204 ctch_open() error:
 we previously assumed 'ctch->vma' could be null (see line 197)

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171106135154.52520-1-michal.wajdeczko@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/i915/intel_guc_ct.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/i915/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/intel_guc_ct.c
@@ -198,6 +198,7 @@ static int ctch_open(struct intel_guc *g
 		err = ctch_init(guc, ctch);
 		if (unlikely(err))
 			goto err_out;
+		GEM_BUG_ON(!ctch->vma);
 	}
 
 	/* vma should be already allocated and map'ed */