From: zsq <zsq@rock-chips.com>
Date: Thu, 7 Mar 2013 01:04:56 +0000 (+0800)
Subject: fix rga mmu map process lock bug
X-Git-Tag: firefly_0821_release~7466
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ddba20c8451afbccb68592251cf63b8747890b30;p=firefly-linux-kernel-4.4.55.git

fix rga mmu map process lock bug
---

diff --git a/drivers/video/rockchip/rga/rga_mmu_info.c b/drivers/video/rockchip/rga/rga_mmu_info.c
index fc017fe9b748..e5b338f0abc3 100755
--- a/drivers/video/rockchip/rga/rga_mmu_info.c
+++ b/drivers/video/rockchip/rga/rga_mmu_info.c
@@ -323,6 +323,7 @@ static int rga_MapUserMemory(struct page **pages,
                                 pte = pte_offset_map_lock(current->mm, pmd, (Memory + i) << PAGE_SHIFT, &ptl);
                                 if (!pte)
                                 {
+                                    pte_unmap_unlock(pte, ptl);
                                     break;
                                 }
                             }