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Wed, 13 May 2020 13:33:08 +0000 (GMT) X-AuditID: cbfec7f2-f0bff7000001ef66-53-5ebbf71590b3 Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 1D.37.07950.417FBBE5; Wed, 13 May 2020 14:33:08 +0100 (BST) Received: from AMDC2765.digital.local (unknown [106.120.51.73]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20200513133308eusmtip17de24666b15bff0680978334a3b7af82~OmcSb531w0131701317eusmtip1D; Wed, 13 May 2020 13:33:08 +0000 (GMT) From: Marek Szyprowski To: dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 17/38] drm: omapdrm: use common helper for extracting pages array Date: Wed, 13 May 2020 15:32:24 +0200 Message-Id: <20200513133245.6408-17-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200513133245.6408-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrHKsWRmVeSWpSXmKPExsWy7djP87qi33fHGfxZy2nRe+4kk8XGGetZ Lf5vm8hsceXrezaLlauPMlks2G9t8eXKQyaLTY+vsVpc3jWHzWLtkbvsFgc/PGG1WD//FpsD j8eaeWsYPfZ+W8Disf3bA1aP+93HmTw2L6n3uP3vMbPH5BvLGT1232xg8+jbsorR4/iN7Uwe nzfJBXBHcdmkpOZklqUW6dslcGV8PJVdcJWn4sxK1wbGNVxdjJwcEgImElc2b2XpYuTiEBJY wSix99kCJgjnC6PEjvU/mSGcz4wSB08fZeti5ABraWpkBekWEljOKPGhRwiu4ez2HywgCTYB Q4mut11sILaIQCujxIleHpAiZoFDTBJbWq+CFQkLhEkcnL0RrIhFQFXi0J+7TCA2r4CtxK17 b9gh7pOXWL3hADOIzQkUf3VnPwtEfB+7xK5DChC2i8Tx3XtZIWxhiVfHt0D1ykicntwD9puE QDOjxMNza9khnB5GictNMxghqqwl7pz7BfYas4CmxPpd+hBhR4n5f6ayQHzMJ3HjrSBImBnI nLRtOjNEmFeio00IolpNYtbxdXBrD164xAxhe0j0nOmBBu9hYCD+2sI+gVF+FsKyBYyMqxjF U0uLc9NTiw3zUsv1ihNzi0vz0vWS83M3MQJT0el/xz/tYPx6KekQowAHoxIPr8Wt3XFCrIll xZW5hxglOJiVRHj91gOFeFMSK6tSi/Lji0pzUosPMUpzsCiJ8xovehkrJJCeWJKanZpakFoE k2Xi4JRqYGSyjto0/+O66oDJpxg0mL8nzaw/0OyruvjvRm/LEyt+tBwUM+2IvLSocmfwh6tN IkekZhyUNN71pP2jmAGDjKD15qhF0pILHp4rNWLKMdfIu1uU7rKjN1lhB2fWrKLJx9LTfc7e YDgrqLq/X7H3xvUpH98wLLJfbSGjeeDlve1OuS437/w2ClJiKc5INNRiLipOBACZ16MhQQMA AA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprIIsWRmVeSWpSXmKPExsVy+t/xu7oi33fHGXz+YmzRe+4kk8XGGetZ Lf5vm8hsceXrezaLlauPMlks2G9t8eXKQyaLTY+vsVpc3jWHzWLtkbvsFgc/PGG1WD//FpsD j8eaeWsYPfZ+W8Disf3bA1aP+93HmTw2L6n3uP3vMbPH5BvLGT1232xg8+jbsorR4/iN7Uwe nzfJBXBH6dkU5ZeWpCpk5BeX2CpFG1oY6RlaWugZmVjqGRqbx1oZmSrp29mkpOZklqUW6dsl 6GV8PJVdcJWn4sxK1wbGNVxdjBwcEgImEk2NrF2MXBxCAksZJVZ/7wByOIHiMhInpzVA2cIS f651sUEUfWKUmNy5kgkkwSZgKNH1FiIhItDJKDGt+yM7iMMscIJJ4t7e+YwgVcICIRLL185j B7FZBFQlDv25C9bNK2ArceveG3aIFfISqzccYAaxOYHir+7sZwGxhQTyJfYu3sc2gZFvASPD KkaR1NLi3PTcYiO94sTc4tK8dL3k/NxNjMDo2Hbs55YdjF3vgg8xCnAwKvHwWtzaHSfEmlhW XJl7iFGCg1lJhNdvPVCINyWxsiq1KD++qDQntfgQoynQUROZpUST84GRm1cSb2hqaG5haWhu bG5sZqEkztshcDBGSCA9sSQ1OzW1ILUIpo+Jg1OqgTFEfVVGiUJNudmZT/Z/hQujxe10Pz5K CFly9YPDpFX/+zYXRZj+c1j82eXgkZevcr0YlFw/Jl532q1p6/tj+Yfa5VLPK3MfLFimmiDI m9qu19K4renHuzRH4duz2OJWf72T7pV/f8KH4++4Pz/gWyJ+q39vVNmek89jXRIUX8z4eOvk hM9zXtcosRRnJBpqMRcVJwIA+OxVUqQCAAA= X-CMS-MailID: 20200513133308eucas1p248892466634483dfa3b23f11e4da0e68 X-Msg-Generator: CA X-RootMTR: 20200513133308eucas1p248892466634483dfa3b23f11e4da0e68 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200513133308eucas1p248892466634483dfa3b23f11e4da0e68 References: <20200513132114.6046-1-m.szyprowski@samsung.com> <20200513133245.6408-1-m.szyprowski@samsung.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bartlomiej Zolnierkiewicz , David Airlie , Tomi Valkeinen , Robin Murphy , Christoph Hellwig , linux-arm-kernel@lists.infradead.org, Marek Szyprowski MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Use common helper for converting a sg_table object into struct page pointer array. Signed-off-by: Marek Szyprowski --- For more information, see '[PATCH v5 00/38] DRM: fix struct sg_table nents vs. orig_nents misuse' thread: https://lore.kernel.org/linux-iommu/20200513132114.6046-1-m.szyprowski@samsung.com/T/ --- drivers/gpu/drm/omapdrm/omap_gem.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index d08ae95..c259411 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -1297,10 +1297,9 @@ struct drm_gem_object *omap_gem_new_dmabuf(struct drm_device *dev, size_t size, omap_obj->dma_addr = sg_dma_address(sgt->sgl); } else { /* Create pages list from sgt */ - struct sg_page_iter iter; struct page **pages; unsigned int npages; - unsigned int i = 0; + unsigned int ret; npages = DIV_ROUND_UP(size, PAGE_SIZE); pages = kcalloc(npages, sizeof(*pages), GFP_KERNEL); @@ -1311,14 +1310,9 @@ struct drm_gem_object *omap_gem_new_dmabuf(struct drm_device *dev, size_t size, } omap_obj->pages = pages; - - for_each_sg_page(sgt->sgl, &iter, sgt->orig_nents, 0) { - pages[i++] = sg_page_iter_page(&iter); - if (i > npages) - break; - } - - if (WARN_ON(i != npages)) { + ret = drm_prime_sg_to_page_addr_arrays(sgt, pages, NULL, + npages); + if (WARN_ON(ret)) { omap_gem_free_object(obj); obj = ERR_PTR(-ENOMEM); goto done;