From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 11 Sep 2018 13:42:14 +0000 (+0200)
Subject: udmabuf: drop WARN_ON() check.
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7b26e4e2119d0c5ede1282b22ce2af22835ff4b5;p=openwrt%2Fstaging%2Fblogic.git

udmabuf: drop WARN_ON() check.

Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-12-kraxel@redhat.com
---

diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index 5dd73bc511ba..63cc77edd1f3 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -25,9 +25,6 @@ static int udmabuf_vm_fault(struct vm_fault *vmf)
 	struct vm_area_struct *vma = vmf->vma;
 	struct udmabuf *ubuf = vma->vm_private_data;
 
-	if (WARN_ON(vmf->pgoff >= ubuf->pagecount))
-		return VM_FAULT_SIGBUS;
-
 	vmf->page = ubuf->pages[vmf->pgoff];
 	get_page(vmf->page);
 	return 0;