From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51646 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752785AbdLRNyH (ORCPT ); Mon, 18 Dec 2017 08:54:07 -0500 Subject: Patch "drm/omap: fix dmabuf mmap for dma_alloc'ed buffers" has been added to the 4.4-stable tree To: tomi.valkeinen@ti.com, alexander.levin@verizon.com, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 18 Dec 2017 14:53:49 +0100 Message-ID: <1513605229157166@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled drm/omap: fix dmabuf mmap for dma_alloc'ed buffers to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-omap-fix-dmabuf-mmap-for-dma_alloc-ed-buffers.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Mon Dec 18 14:47:43 CET 2017 From: Tomi Valkeinen Date: Tue, 28 Feb 2017 10:11:45 +0200 Subject: drm/omap: fix dmabuf mmap for dma_alloc'ed buffers From: Tomi Valkeinen [ Upstream commit 9fa1d7537242bd580ffa99c4725a0407096aad26 ] omap_gem_dmabuf_mmap() returns an error (with a WARN) when called for a buffer which is allocated with dma_alloc_*(). This prevents dmabuf mmap from working on SoCs without DMM, e.g. AM4 and OMAP3. I could not find any reason for omap_gem_dmabuf_mmap() rejecting such buffers, and just removing the if() fixes the limitation. Signed-off-by: Tomi Valkeinen Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c | 3 --- 1 file changed, 3 deletions(-) --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c @@ -142,9 +142,6 @@ static int omap_gem_dmabuf_mmap(struct d struct drm_gem_object *obj = buffer->priv; int ret = 0; - if (WARN_ON(!obj->filp)) - return -EINVAL; - ret = drm_gem_mmap_obj(obj, omap_gem_mmap_size(obj), vma); if (ret < 0) return ret; Patches currently in stable-queue which might be from tomi.valkeinen@ti.com are queue-4.4/drm-omap-fix-dmabuf-mmap-for-dma_alloc-ed-buffers.patch