linux-kernel - [PATCH v2] drm/panfrost: Use kvfree() to free bo->sgts

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Message-Id: <20200608151728.234026-1-efremov@linux.com>
Date:   Mon,  8 Jun 2020 18:17:28 +0300
From:   Denis Efremov <efremov@...ux.com>
To:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>
Cc:     Denis Efremov <efremov@...ux.com>,
        Steven Price <steven.price@....com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Rob Herring <robh@...nel.org>, stable@...r.kernel.org
Subject: [PATCH v2] drm/panfrost: Use kvfree() to free bo->sgts

Use kvfree() to free bo->sgts, because the memory is allocated with
kvmalloc_array() in panfrost_mmu_map_fault_addr().

Fixes: 187d2929206e ("drm/panfrost: Add support for GPU heap allocations")
Cc: stable@...r.kernel.org
Signed-off-by: Denis Efremov <efremov@...ux.com>
---
Change in v2:
 - kvfree() fixed in panfrost_gem_free_object(), thanks to Steven Price

 drivers/gpu/drm/panfrost/panfrost_gem.c | 2 +-
 drivers/gpu/drm/panfrost/panfrost_mmu.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
index 17b654e1eb94..556181ea4a07 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
@@ -46,7 +46,7 @@ static void panfrost_gem_free_object(struct drm_gem_object *obj)
 				sg_free_table(&bo->sgts[i]);
 			}
 		}
-		kfree(bo->sgts);
+		kvfree(bo->sgts);
 	}
 
 	drm_gem_shmem_free_object(obj);
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index ed28aeba6d59..3c8ae7411c80 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -486,7 +486,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
 		pages = kvmalloc_array(bo->base.base.size >> PAGE_SHIFT,
 				       sizeof(struct page *), GFP_KERNEL | __GFP_ZERO);
 		if (!pages) {
-			kfree(bo->sgts);
+			kvfree(bo->sgts);
 			bo->sgts = NULL;
 			mutex_unlock(&bo->base.pages_lock);
 			ret = -ENOMEM;
-- 
2.26.2