From 18b3f5ac6b55f5f3f60723a58f14ec235a5b8cfe Mon Sep 17 00:00:00 2001
From: Mikko Perttunen <mperttunen@nvidia.com>
Date: Wed, 2 Aug 2017 12:55:04 +0300
Subject: [PATCH] gpu: host1x: Don't fail on NULL bo physical address
Git-commit: 18b3f5ac6b55f5f3f60723a58f14ec235a5b8cfe
Patch-mainline: v4.14-rc1
References: bsc#1051510

Pinning a Host1x BO currently cannot fail and zero is a valid address
for a BO when IOMMU is enabled. To avoid false errors remove checks
for NULL BO physical addresses.

Fixes: 404bfb78daf3 ("gpu: host1x: Add IOMMU support")
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/host1x/job.c |    8 --------
 1 file changed, 8 deletions(-)

--- a/drivers/gpu/host1x/job.c
+++ b/drivers/gpu/host1x/job.c
@@ -193,10 +193,6 @@ static unsigned int pin_job(struct host1
 		}
 
 		phys_addr = host1x_bo_pin(reloc->target.bo, &sgt);
-		if (!phys_addr) {
-			err = -EINVAL;
-			goto unpin;
-		}
 
 		job->addr_phys[job->num_unpins] = phys_addr;
 		job->unpins[job->num_unpins].bo = reloc->target.bo;
@@ -221,10 +217,6 @@ static unsigned int pin_job(struct host1
 		}
 
 		phys_addr = host1x_bo_pin(g->bo, &sgt);
-		if (!phys_addr) {
-			err = -EINVAL;
-			goto unpin;
-		}
 
 		if (!IS_ENABLED(CONFIG_TEGRA_HOST1X_FIREWALL) && host->domain) {
 			for_each_sg(sgt->sgl, sg, sgt->nents, j)