From: Mikko Perttunen <mperttunen@nvidia.com>
Date: Wed, 2 Aug 2017 09:55:04 +0000 (+0300)
Subject: gpu: host1x: Don't fail on NULL bo physical address
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=18b3f5ac6b55f5f3f60723a58f14ec235a5b8cfe;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

gpu: host1x: Don't fail on NULL bo physical address

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>
---

diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c
index bee504406cfc..db509ab8874e 100644
--- a/drivers/gpu/host1x/job.c
+++ b/drivers/gpu/host1x/job.c
@@ -197,10 +197,6 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)
 		}
 
 		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;
@@ -225,10 +221,6 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)
 		}
 
 		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)