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Wed, 13 May 2020 13:33:11 +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 21/38] drm: rockchip: use common helper for a scatterlist contiguity check Date: Wed, 13 May 2020 15:32:28 +0200 Message-Id: <20200513133245.6408-21-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: H4sIAAAAAAAAA0WSe0hTURzHO7v3bnfT2XUKnizSBiUK+aAHt2xhIXUpiv6TitSlFzWdyq5a RtJS0pqPTPGB1ZiPNB/TZbaFEurUNAwzFfGZb9KZFeosg1yb1+y/z/d7vj++v3M4OCJqwZzx iOg4Wh4tjRJzBaju3frHg/BnU6B3m9KFzOx5zyFfFtZhpFn3GCEHTN+5ZGV1B4c0Ty9i5LOc JFLd7EuuDkxxyPqZQYzsb3zKJZcnzQipaR/nka0/ZjE/O6pGVQOot2tqlNKvTWLURHonh3pV dpca3ZhBqNyhCkA1DSu41J+iZpTKaqgClH5QhVAr9Xsv2V4RnAiloyISaLnXyWBBeEltF4hN sbulz9NyFOCLjRLwcUgchrW6DqAEAlxEvADQOPEEZcUqgGXJaoQVKwA+N4xy/o1omka2UhUA rmmGedsjLaPVmDXFJXygcknJtbIjcR/ArkxbKyNEPgKrTGes7EAEwWyTfjOPEvuhNkvFs7KQ kMBPqhYu2+YCq7UtiJX5Ft841rzZDIlBHizIL8DYkD/s16i32AEaOxt4LO+B3bkZWwMpAE71 aHisyACwP7kQsClfONbz21KHW9Zzh3WNXqx9ChZv9G3akLCDQ0v27AXsYI6uAGFtIXyQKmLT B2BRZ+12bWtvH8IyBRVp5Vuv1QbgUr6Rkw1civ6XqQGoAk50PCMLoxmfaPqmJyOVMfHRYZ4h MbJ6YPlX3Rudy2+Aqe+6ARA4ENsKyZGmQBEmTWASZQYAcUTsKLxYZ7GEodLE27Q8JkgeH0Uz BrAbR8VOwkMlC9dERJg0jo6k6Vha/u+Ug/OdFUCrEHY3J+coj1z+/DDd3iU1ScDsGpzsOztf eWwuNXN8X3HkOTDrGhuUXZ7agfqtBH1zdZfMu5n1xy/ssMn4IOGPrS+Xulb635MUl3mnhXSE 3+GnHF3wiH9t1urCpxeDbUodvAR5JjfUcFoYINkZ0K6auzFlP/Er9irXaDz/9VGvGGXCpT4e iJyR/gVAyx62UwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrIIsWRmVeSWpSXmKPExsVy+t/xu7oS33fHGTR8YrHoPXeSyWLjjPWs Fv+3TWS2uPL1PZvFytVHmSz+P3rNajF3Uq3Fgv3WFl+uPGSy2PT4GqvF5V1z2Cw+PfjPbLH2 yF12i4MfnrA68HmsmbeG0WPvtwUsHtu/PWD1uN99nMlj85J6j9v/HjN7TL6xnNFj980GNo+/ s/azePRtWcXosf3aPGaPz5vkAnii9GyK8ktLUhUy8otLbJWiDS2M9AwtLfSMTCz1DI3NY62M TJX07WxSUnMyy1KL9O0S9DIWrTvBWNDMV7F96gamBsbn3F2MnBwSAiYSa3ffYuli5OIQEljK KPGxvY0VIiEjcXJaA5QtLPHnWhcbRNEnRolZB76zgyTYBAwlut5CJEQEOhklpnV/ZAdxmAXm MUssX3WYqYuRg0NYIFbizO8akAYWAVWJDX3zwJp5BWwlLs47wAaxQV5i9YYDzCA2J1D81Z39 LCC2kEC+xN7F+9gmMPItYGRYxSiSWlqcm55bbKhXnJhbXJqXrpecn7uJERg924793LyD8dLG 4EOMAhyMSjy8Frd2xwmxJpYVV+YeYpTgYFYS4fVbDxTiTUmsrEotyo8vKs1JLT7EaAp01ERm KdHkfGBk55XEG5oamltYGpobmxubWSiJ83YIHIwREkhPLEnNTk0tSC2C6WPi4JRqYNTdupiv +rL9JGG5aYknGtXvrFb8EXz50qy3YR/j9IJnGK/qeMm9c+tnxzlh4r1rN+5643zj/dPkHdKe 01sfNoq01xzgm1TQVJOf9XxDoM4Dp+NV8myLmKy1E6/yTfs7W2P6VdfF/msvlfnezfm6407d 797Eo9XP/N/sFY+6FunFxRLaeV7CQlKJpTgj0VCLuag4EQDTlMswtAIAAA== X-CMS-MailID: 20200513133312eucas1p15e5e3bb3ba8e74b923fdccc7decab375 X-Msg-Generator: CA X-RootMTR: 20200513133312eucas1p15e5e3bb3ba8e74b923fdccc7decab375 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200513133312eucas1p15e5e3bb3ba8e74b923fdccc7decab375 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 , Sandy Huang , linux-rockchip@lists.infradead.org, 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 checking the contiguity of the imported dma-buf. 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/rockchip/rockchip_drm_gem.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) -- 1.9.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c index 0d18846..21f8cb2 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -460,23 +460,6 @@ struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj) return sgt; } -static unsigned long rockchip_sg_get_contiguous_size(struct sg_table *sgt, - int count) -{ - struct scatterlist *s; - dma_addr_t expected = sg_dma_address(sgt->sgl); - unsigned int i; - unsigned long size = 0; - - for_each_sg(sgt->sgl, s, count, i) { - if (sg_dma_address(s) != expected) - break; - expected = sg_dma_address(s) + sg_dma_len(s); - size += sg_dma_len(s); - } - return size; -} - static int rockchip_gem_iommu_map_sg(struct drm_device *drm, struct dma_buf_attachment *attach, @@ -498,7 +481,7 @@ static unsigned long rockchip_sg_get_contiguous_size(struct sg_table *sgt, if (!count) return -EINVAL; - if (rockchip_sg_get_contiguous_size(sg, count) < attach->dmabuf->size) { + if (drm_prime_get_contiguous_size(sg) < attach->dmabuf->size) { DRM_ERROR("failed to map sg_table to contiguous linear address.\n"); dma_unmap_sg(drm->dev, sg->sgl, sg->nents, DMA_BIDIRECTIONAL);