Linaro-mm-sig May 2025

linaro-mm-sig@lists.linaro.org

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102 discussions

Re: [PATCH 1/3] dma-buf: add flags to skip map_dma_buf() for some drivers

by kernel test robot

Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on jic23-iio/togreg] [also build test WARNING on char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus usb/usb-testing usb/usb-next usb/usb-linus xen-tip/linux-next linus/master v6.15-rc4] [cannot apply to tegra/for-next drm-xe/drm-xe-next rmk-arm/drm-armada-devel rmk-arm/drm-armada-fixes next-20250430] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/oushixiong1025-163-com/drm-p… base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg patch link: https://lore.kernel.org/r/20250430085658.540746-1-oushixiong1025%40163.com patch subject: [PATCH 1/3] dma-buf: add flags to skip map_dma_buf() for some drivers config: arc-randconfig-002-20250501 (https://download.01.org/0day-ci/archive/20250502/202505020434.7EfUIAjh-lkp@…) compiler: arc-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250502/202505020434.7EfUIAjh-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202505020434.7EfUIAjh-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/dma-buf/dma-buf.c:908: warning: Function parameter or struct member 'skip_map' not described in 'dma_buf_dynamic_attach' >> drivers/dma-buf/dma-buf.c:996: warning: Function parameter or struct member 'skip_map' not described in 'dma_buf_attach' vim +908 drivers/dma-buf/dma-buf.c 84335675f2223c drivers/dma-buf/dma-buf.c Simona Vetter 2021-01-15 817 ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 818 /** ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 819 * DOC: locking convention ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 820 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 821 * In order to avoid deadlock situations between dma-buf exports and importers, ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 822 * all dma-buf API users must follow the common dma-buf locking convention. ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 823 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 824 * Convention for importers ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 825 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 826 * 1. Importers must hold the dma-buf reservation lock when calling these ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 827 * functions: ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 828 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 829 * - dma_buf_pin() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 830 * - dma_buf_unpin() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 831 * - dma_buf_map_attachment() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 832 * - dma_buf_unmap_attachment() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 833 * - dma_buf_vmap() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 834 * - dma_buf_vunmap() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 835 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 836 * 2. Importers must not hold the dma-buf reservation lock when calling these ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 837 * functions: ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 838 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 839 * - dma_buf_attach() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 840 * - dma_buf_dynamic_attach() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 841 * - dma_buf_detach() e3ecbd21776f1f drivers/dma-buf/dma-buf.c Maíra Canal 2023-02-23 842 * - dma_buf_export() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 843 * - dma_buf_fd() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 844 * - dma_buf_get() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 845 * - dma_buf_put() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 846 * - dma_buf_mmap() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 847 * - dma_buf_begin_cpu_access() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 848 * - dma_buf_end_cpu_access() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 849 * - dma_buf_map_attachment_unlocked() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 850 * - dma_buf_unmap_attachment_unlocked() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 851 * - dma_buf_vmap_unlocked() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 852 * - dma_buf_vunmap_unlocked() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 853 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 854 * Convention for exporters ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 855 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 856 * 1. These &dma_buf_ops callbacks are invoked with unlocked dma-buf ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 857 * reservation and exporter can take the lock: ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 858 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 859 * - &dma_buf_ops.attach() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 860 * - &dma_buf_ops.detach() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 861 * - &dma_buf_ops.release() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 862 * - &dma_buf_ops.begin_cpu_access() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 863 * - &dma_buf_ops.end_cpu_access() 8021fa16b7ec0a drivers/dma-buf/dma-buf.c Dmitry Osipenko 2023-05-30 864 * - &dma_buf_ops.mmap() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 865 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 866 * 2. These &dma_buf_ops callbacks are invoked with locked dma-buf ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 867 * reservation and exporter can't take the lock: ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 868 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 869 * - &dma_buf_ops.pin() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 870 * - &dma_buf_ops.unpin() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 871 * - &dma_buf_ops.map_dma_buf() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 872 * - &dma_buf_ops.unmap_dma_buf() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 873 * - &dma_buf_ops.vmap() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 874 * - &dma_buf_ops.vunmap() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 875 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 876 * 3. Exporters must hold the dma-buf reservation lock when calling these ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 877 * functions: ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 878 * ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 879 * - dma_buf_move_notify() ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 880 */ ae2e7f28a170c0 drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 881 d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 882 /** 85804b70cca68d drivers/dma-buf/dma-buf.c Simona Vetter 2020-12-11 883 * dma_buf_dynamic_attach - Add the device to dma_buf's attachments list d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 884 * @dmabuf: [in] buffer to attach device to. d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 885 * @dev: [in] device to be attached. 6f49c2515e2258 drivers/dma-buf/dma-buf.c Randy Dunlap 2020-04-07 886 * @importer_ops: [in] importer operations for the attachment 6f49c2515e2258 drivers/dma-buf/dma-buf.c Randy Dunlap 2020-04-07 887 * @importer_priv: [in] importer private pointer for the attachment d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 888 * 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 889 * Returns struct dma_buf_attachment pointer for this attachment. Attachments 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 890 * must be cleaned up by calling dma_buf_detach(). 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 891 * 85804b70cca68d drivers/dma-buf/dma-buf.c Simona Vetter 2020-12-11 892 * Optionally this calls &dma_buf_ops.attach to allow device-specific attach 85804b70cca68d drivers/dma-buf/dma-buf.c Simona Vetter 2020-12-11 893 * functionality. 85804b70cca68d drivers/dma-buf/dma-buf.c Simona Vetter 2020-12-11 894 * 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 895 * Returns: 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 896 * 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 897 * A pointer to newly created &dma_buf_attachment on success, or a negative 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 898 * error code wrapped into a pointer on failure. 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 899 * 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 900 * Note that this can fail if the backing storage of @dmabuf is in a place not 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 901 * accessible to @dev, and cannot be moved to a more suitable place. This is 2904a8c1311f02 drivers/dma-buf/dma-buf.c Simona Vetter 2016-12-09 902 * indicated with the error code -EBUSY. d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 903 */ 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 904 struct dma_buf_attachment * 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 905 dma_buf_dynamic_attach(struct dma_buf *dmabuf, struct device *dev, bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 906 const struct dma_buf_attach_ops *importer_ops, 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 907 void *importer_priv, bool skip_map) d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 @908 { d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 909 struct dma_buf_attachment *attach; d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 910 int ret; d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 911 d1aa06a1eaf5f7 drivers/base/dma-buf.c Laurent Pinchart 2012-01-26 912 if (WARN_ON(!dmabuf || !dev)) d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 913 return ERR_PTR(-EINVAL); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 914 4981cdb063e3e9 drivers/dma-buf/dma-buf.c Christian König 2020-02-19 915 if (WARN_ON(importer_ops && !importer_ops->move_notify)) 4981cdb063e3e9 drivers/dma-buf/dma-buf.c Christian König 2020-02-19 916 return ERR_PTR(-EINVAL); 4981cdb063e3e9 drivers/dma-buf/dma-buf.c Christian König 2020-02-19 917 db7942b6292306 drivers/dma-buf/dma-buf.c Markus Elfring 2017-05-08 918 attach = kzalloc(sizeof(*attach), GFP_KERNEL); 34d84ec4881d13 drivers/dma-buf/dma-buf.c Markus Elfring 2017-05-08 919 if (!attach) a9fbc3b73127ef drivers/base/dma-buf.c Laurent Pinchart 2012-01-26 920 return ERR_PTR(-ENOMEM); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 921 d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 922 attach->dev = dev; d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 923 attach->dmabuf = dmabuf; 09606b5446c25b drivers/dma-buf/dma-buf.c Christian König 2018-03-22 924 if (importer_ops) 09606b5446c25b drivers/dma-buf/dma-buf.c Christian König 2018-03-22 925 attach->peer2peer = importer_ops->allow_peer2peer; bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 926 attach->importer_ops = importer_ops; bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 927 attach->importer_priv = importer_priv; 2ed9201bdd9a8e drivers/base/dma-buf.c Laurent Pinchart 2012-01-26 928 d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 929 if (dmabuf->ops->attach) { a19741e5e5a9f1 drivers/dma-buf/dma-buf.c Christian König 2018-05-28 930 ret = dmabuf->ops->attach(dmabuf, attach); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 931 if (ret) d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 932 goto err_attach; d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 933 } 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 934 dma_resv_lock(dmabuf->resv, NULL); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 935 list_add(&attach->node, &dmabuf->attachments); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 936 dma_resv_unlock(dmabuf->resv); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 937 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 938 /* When either the importer or the exporter can't handle dynamic 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 939 * mappings we cache the mapping here to avoid issues with the 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 940 * reservation object lock. 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 941 */ 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 942 if (dma_buf_attachment_is_dynamic(attach) != 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 943 dma_buf_is_dynamic(dmabuf)) { 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 944 dma_resv_lock(attach->dmabuf->resv, NULL); 809d9c72c2f83e drivers/dma-buf/dma-buf.c Dmitry Osipenko 2022-10-17 945 if (dma_buf_is_dynamic(attach->dmabuf)) { 7e008b02557cce drivers/dma-buf/dma-buf.c Christian König 2021-05-17 946 ret = dmabuf->ops->pin(attach); bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 947 if (ret) bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 948 goto err_unlock; bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 949 } 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 950 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 951 if (!skip_map) { 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 952 struct sg_table *sgt; 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 953 84335675f2223c drivers/dma-buf/dma-buf.c Simona Vetter 2021-01-15 954 sgt = __map_dma_buf(attach, DMA_BIDIRECTIONAL); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 955 if (!sgt) 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 956 sgt = ERR_PTR(-ENOMEM); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 957 if (IS_ERR(sgt)) { 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 958 ret = PTR_ERR(sgt); bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 959 goto err_unpin; 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 960 } 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 961 attach->sgt = sgt; 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 962 attach->dir = DMA_BIDIRECTIONAL; 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 963 } 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 964 dma_resv_unlock(attach->dmabuf->resv); 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 965 } 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 966 d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 967 return attach; d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 968 d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 969 err_attach: d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 970 kfree(attach); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 971 return ERR_PTR(ret); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 972 bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 973 err_unpin: bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 974 if (dma_buf_is_dynamic(attach->dmabuf)) 7e008b02557cce drivers/dma-buf/dma-buf.c Christian König 2021-05-17 975 dmabuf->ops->unpin(attach); bb42df4662a447 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 976 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 977 err_unlock: 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 978 dma_resv_unlock(attach->dmabuf->resv); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 979 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 980 dma_buf_detach(dmabuf, attach); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 981 return ERR_PTR(ret); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 982 } cdd30ebb1b9f36 drivers/dma-buf/dma-buf.c Peter Zijlstra 2024-12-02 983 EXPORT_SYMBOL_NS_GPL(dma_buf_dynamic_attach, "DMA_BUF"); 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 984 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 985 /** 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 986 * dma_buf_attach - Wrapper for dma_buf_dynamic_attach 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 987 * @dmabuf: [in] buffer to attach device to. 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 988 * @dev: [in] device to be attached. 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 989 * 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 990 * Wrapper to call dma_buf_dynamic_attach() for drivers which still use a static 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 991 * mapping. 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 992 */ 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 993 struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf, 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 994 struct device *dev, 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 995 bool skip_map) 15fd552d186cb0 drivers/dma-buf/dma-buf.c Christian König 2018-07-03 @996 { 8935ae05eee351 drivers/dma-buf/dma-buf.c Shixiong Ou 2025-04-30 997 return dma_buf_dynamic_attach(dmabuf, dev, NULL, NULL, skip_map); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 998 } cdd30ebb1b9f36 drivers/dma-buf/dma-buf.c Peter Zijlstra 2024-12-02 999 EXPORT_SYMBOL_NS_GPL(dma_buf_attach, "DMA_BUF"); d15bd7ee445d07 drivers/base/dma-buf.c Sumit Semwal 2011-12-26 1000 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

3 weeks

Re: [PATCH 2/3] drm/prime: Support importing DMA-BUF without sg_table

by kernel test robot

3 weeks, 1 day

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