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Fri, 4 Sep 2020 13:34:56 +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 Cc: Marek Szyprowski , Christoph Hellwig , Robin Murphy , Bartlomiej Zolnierkiewicz , linux-arm-kernel@lists.infradead.org, David Airlie , Daniel Vetter , Kukjin Kim , Krzysztof Kozlowski , Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , linux-samsung-soc@vger.kernel.org Subject: [PATCH v10 06/30] drm: exynos: use common helper for a scatterlist contiguity check Date: Fri, 4 Sep 2020 15:16:47 +0200 Message-Id: <20200904131711.12950-7-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200904131711.12950-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0VSa1BMYRj2ndueXS2nrZm+YsQOzQglmvHNpOQy48zww/SPGbJ0VNRmdm1k xlhbUutaDVZuXRC7XbYtRZRqlkW1G7XZkNQWFQ2jNOMWu87Kv+d9nuf9nmfe+Whc0k4G0Iny fZxCLkuSUiKi5tE325Ija2Jil1b0zEInrU8wVKmrINHvmhwcdX79RKFbhocYyu09Q6CCBxFo 6M0zAp12fsCRzWYUoDbNRwEa7+zDkMnZRaKOuksU0tkaMFRm7hGgps8DJNLlDVPRErb0Silg 6ycKCNakz6bY2om3JNt73IKxVdcOs68mnTib5ygB7L1uNcWeqtYDdsw0Z9P0LaKVcVxSYiqn CI3aLkoYPOsU7C30OtA1ZqfUIE+kBUIaMuHwtq4b0wIRLWFuAnjDkSvgh3EAbbXtHmUMwItF 54h/K8Xl4x6hBMDBx3Z8asXQfYxyuygmDGpHtX+xL3MUwMcnvdwmnCkh4GXDL1ILaNqH2Qaz exa7PQSzAD6qacfdWMxEwsIT50g+LRAajI1/eSET5So7QLrfgcyoAI5Y7QLetA4OlWfgPPaB I5ZqDz8b/r57FeMX0gHss5YJ+OEEgB0aHeBdEfC19TvlboQzC2FFXShPr4Yv9VWYm4bMDOgY 9XbTuAvm1pzHeVoMszIlvDsI5lvKp2Kb2p976rDQMmT33DTHddPWp9gZEJj/P6wAAD3w41TK 5HhOuUzO7Q9RypKVKnl8yM6UZBNw/bOWScv4HVD3c0czYGgg9RJPWxUTKyFlqcq05GYAaVzq K17T1rJNIo6TpR3kFCmxClUSp2wGs2hC6ideXjS8VcLEy/ZxezhuL6f4p2K0MEANwtTOi42O J8J5nc8qsPtdGnPCoiut6cVzBxqMGxZVhvRbM9L7J9rY2cPTxoSGp/J3qqwVVzVBZv/XiZuD uzaKU8OLqPcHZmbudpod3r1fLvgHal7akPzHelUTtTbTtzeHYI19Pj3S6JmFkYda/Oc3SkID 668ndt5/ITZ3H1/2apeUUCbIwoJxhVL2B90DlvljAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrIIsWRmVeSWpSXmKPExsVy+t/xu7qNTkHxBrtbmCx6z51kstg4Yz2r xf9tE5ktrnx9z2axcvVRJotJ9yewWCzYb23x4t5FFov+x6+ZLc6f38BucbbpDbvFlysPmSw2 Pb7GanF51xw2ixnn9zFZrD1yl93i4IcnrBYzJr9kcxDyWDNvDaPH3m8LWDw2repk89j+7QGr x/3u40wem5fUe9z+95jZY/KN5Yweu282sHn0bVnF6PF5k1wAd5SeTVF+aUmqQkZ+cYmtUrSh hZGeoaWFnpGJpZ6hsXmslZGpkr6dTUpqTmZZapG+XYJextOpj9kLFvJUXPt8la2BcTJXFyMn h4SAicTidV+Yuhi5OIQEljJK3Fm0hwUiISNxcloDK4QtLPHnWhcbRNEnRom2f6/YQBJsAoYS XW8hEiICnYwS07o/soM4zAKbWST+rX8C5HBwCAvESCyeogHSwCKgKnFs2wVmEJtXwFZiYc80 qA3yEqs3HACLcwrYSWyd8QQsLgRU82HOYpYJjHwLGBlWMYqklhbnpucWG+kVJ+YWl+al6yXn 525iBEbXtmM/t+xg7HoXfIhRgINRiYeXwT4oXog1say4MvcQowQHs5IIr9PZ03FCvCmJlVWp RfnxRaU5qcWHGE2BjprILCWanA+M/LySeENTQ3MLS0NzY3NjMwslcd4OgYMxQgLpiSWp2amp BalFMH1MHJxSDYyGPxu7Jr5W7Wk0PXffjXufSI7liX0dc7qfibjEb9/q0hnP99Tr9Dm94i0b rj4NOiHrYsxXMj1PJNP+Wf/a0+p3zl3f+f6ufsV255L3j64Frl3R7qa38PH1eQaznopovV5s sPCMRi1jjKmn9vVbk81K7JOqvjDNXP0obZd+m0jR+vzXO3/4XF2mxFKckWioxVxUnAgAX2IH OMQCAAA= X-CMS-MailID: 20200904133457eucas1p24d73bb3e4aa921cb76dc03b309ad5632 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20200904133457eucas1p24d73bb3e4aa921cb76dc03b309ad5632 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200904133457eucas1p24d73bb3e4aa921cb76dc03b309ad5632 References: <20200904131711.12950-1-m.szyprowski@samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use common helper for checking the contiguity of the imported dma-buf. Signed-off-by: Marek Szyprowski Reviewed-by: Andrzej Hajda Acked-by : Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_gem.c | 23 +++-------------------- 1 file changed, 3 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index efa476858db5..1716a023bca0 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -431,27 +431,10 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, { struct exynos_drm_gem *exynos_gem; - if (sgt->nents < 1) + /* check if the entries in the sg_table are contiguous */ + if (drm_prime_get_contiguous_size(sgt) < attach->dmabuf->size) { + DRM_ERROR("buffer chunks must be mapped contiguously"); return ERR_PTR(-EINVAL); - - /* - * Check if the provided buffer has been mapped as contiguous - * into DMA address space. - */ - if (sgt->nents > 1) { - dma_addr_t next_addr = sg_dma_address(sgt->sgl); - struct scatterlist *s; - unsigned int i; - - for_each_sg(sgt->sgl, s, sgt->nents, i) { - if (!sg_dma_len(s)) - break; - if (sg_dma_address(s) != next_addr) { - DRM_ERROR("buffer chunks must be mapped contiguously"); - return ERR_PTR(-EINVAL); - } - next_addr = sg_dma_address(s) + sg_dma_len(s); - } } exynos_gem = exynos_drm_gem_init(dev, attach->dmabuf->size); -- 2.17.1