From 3efdf83ca0f9d3149f8c2201dad86a74fd952f91 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 14 Aug 2019 04:48:14 +0000 Subject: [PATCH] drm/panfrost: Fix missing unlock on error in panfrost_mmu_map_fault_addr() Add the missing unlock before return from function panfrost_mmu_map_fault_addr() in the error handling case. Fixes: 187d2929206e ("drm/panfrost: Add support for GPU heap allocations") Signed-off-by: Wei Yongjun Reviewed-by: Steven Price Signed-off-by: Rob Herring Link: https://patchwork.freedesktop.org/patch/msgid/20190814044814.102294-1-weiyongjun1@huawei.com --- drivers/gpu/drm/panfrost/panfrost_mmu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index 2ed411f09d80..06f1a563e940 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -327,14 +327,17 @@ int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as, u64 addr) if (!bo->base.pages) { bo->sgts = kvmalloc_array(bo->base.base.size / SZ_2M, sizeof(struct sg_table), GFP_KERNEL | __GFP_ZERO); - if (!bo->sgts) + if (!bo->sgts) { + mutex_unlock(&bo->base.pages_lock); return -ENOMEM; + } pages = kvmalloc_array(bo->base.base.size >> PAGE_SHIFT, sizeof(struct page *), GFP_KERNEL | __GFP_ZERO); if (!pages) { kfree(bo->sgts); bo->sgts = NULL; + mutex_unlock(&bo->base.pages_lock); return -ENOMEM; } bo->base.pages = pages;