tree: git://git.kraxel.org/linux drm-dmabuf head: 1de4affc36781cd3e1317d3f3ebcbef64f37be7e commit: 1de4affc36781cd3e1317d3f3ebcbef64f37be7e [1/1] drm/prime: use dma_max_mapping_size() in drm_prime_pages_to_sg() reproduce: make htmldocs If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function parameter or member 'fw_dmcu' not described in 'amdgpu_display_manager' drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function parameter or member 'dmcu_fw_version' not described in 'amdgpu_display_manager' drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function parameter or member 'soc_bounding_box' not described in 'amdgpu_display_manager' drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:1: warning: 'dm_crtc_high_irq' not found drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:1: warning: 'register_hpd_handlers' not found drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:1: warning: 'dm_pflip_high_irq' not found include/linux/regulator/machine.h:196: warning: Function parameter or member 'max_uV_step' not described in 'regulation_constraints' include/linux/regulator/driver.h:223: warning: Function parameter or member 'resume' not described in 'regulator_ops' include/linux/spi/spi.h:190: warning: Function parameter or member 'driver_override' not described in 'spi_device' drivers/gpio/gpiolib-of.c:92: warning: Excess function parameter 'dev' description in 'of_gpio_need_valid_mask' include/linux/i2c.h:337: warning: Function parameter or member 'init_irq' not described in 'i2c_client' drivers/usb/typec/bus.c:1: warning: 'typec_altmode_unregister_driver' not found drivers/usb/typec/bus.c:1: warning: 'typec_altmode_register_driver' not found drivers/usb/typec/class.c:1: warning: 'typec_altmode_register_notifier' not found drivers/usb/typec/class.c:1: warning: 'typec_altmode_unregister_notifier' not found Error: Cannot open file drivers/dma-buf/reservation.c Error: Cannot open file drivers/dma-buf/reservation.c Error: Cannot open file drivers/dma-buf/reservation.c Error: Cannot open file include/linux/reservation.h Error: Cannot open file include/linux/reservation.h fs/fs-writeback.c:913: warning: Excess function parameter 'nr_pages' description in 'cgroup_writeback_by_id' fs/direct-io.c:258: warning: Excess function parameter 'offset' description in 'dio_complete' fs/libfs.c:496: warning: Excess function parameter 'available' description in 'simple_write_end' fs/posix_acl.c:647: warning: Function parameter or member 'inode' not described in 'posix_acl_update_mode' fs/posix_acl.c:647: warning: Function parameter or member 'mode_p' not described in 'posix_acl_update_mode' fs/posix_acl.c:647: warning: Function parameter or member 'acl' not described in 'posix_acl_update_mode' kernel/dma/coherent.c:1: warning: no structured comments found include/linux/input/sparse-keymap.h:43: warning: Function parameter or member 'sw' not described in 'key_entry' include/linux/skbuff.h:888: warning: Function parameter or member 'dev_scratch' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'list' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'ip_defrag_offset' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'skb_mstamp_ns' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member '__cloned_offset' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'head_frag' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member '__pkt_type_offset' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'encapsulation' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'encap_hdr_csum' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'csum_valid' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member '__pkt_vlan_present_offset' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'vlan_present' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'csum_complete_sw' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'csum_level' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'inner_protocol_type' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'remcsum_offload' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'sender_cpu' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'reserved_tailroom' not described in 'sk_buff' include/linux/skbuff.h:888: warning: Function parameter or member 'inner_ipproto' not described in 'sk_buff' include/net/sock.h:233: warning: Function parameter or member 'skc_addrpair' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_portpair' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_ipv6only' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_net_refcnt' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_v6_daddr' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_v6_rcv_saddr' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_cookie' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_listener' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_tw_dr' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_rcv_wnd' not described in 'sock_common' include/net/sock.h:233: warning: Function parameter or member 'skc_tw_rcv_nxt' not described in 'sock_common' include/net/sock.h:515: warning: Function parameter or member 'sk_rx_skb_cache' not described in 'sock' include/net/sock.h:515: warning: Function parameter or member 'sk_wq_raw' not described in 'sock' include/net/sock.h:515: warning: Function parameter or member 'tcp_rtx_queue' not described in 'sock' include/net/sock.h:515: warning: Function parameter or member 'sk_tx_skb_cache' not described in 'sock' include/net/sock.h:515: warning: Function parameter or member 'sk_route_forced_caps' not described in 'sock' include/net/sock.h:515: warning: Function parameter or member 'sk_txtime_report_errors' not described in 'sock' include/net/sock.h:515: warning: Function parameter or member 'sk_validate_xmit_skb' not described in 'sock' include/net/sock.h:515: warning: Function parameter or member 'sk_bpf_storage' not described in 'sock' include/net/sock.h:2439: warning: Function parameter or member 'tcp_rx_skb_cache_key' not described in 'DECLARE_STATIC_KEY_FALSE' include/net/sock.h:2439: warning: Excess function parameter 'sk' description in 'DECLARE_STATIC_KEY_FALSE' include/net/sock.h:2439: warning: Excess function parameter 'skb' description in 'DECLARE_STATIC_KEY_FALSE' include/linux/netdevice.h:2053: warning: Function parameter or member 'gso_partial_features' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'l3mdev_ops' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'xfrmdev_ops' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'tlsdev_ops' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'name_assign_type' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'ieee802154_ptr' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'mpls_ptr' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'xdp_prog' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'gro_flush_timeout' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'nf_hooks_ingress' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member '____cacheline_aligned_in_smp' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'qdisc_hash' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'xps_cpus_map' not described in 'net_device' include/linux/netdevice.h:2053: warning: Function parameter or member 'xps_rxqs_map' not described in 'net_device' include/linux/phylink.h:56: warning: Function parameter or member '__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising' not described in 'phylink_link_state' include/linux/phylink.h:56: warning: Function parameter or member '__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising' not described in 'phylink_link_state' drivers/net/phy/phylink.c:595: warning: Function parameter or member 'config' not described in 'phylink_create' drivers/net/phy/phylink.c:595: warning: Excess function parameter 'ndev' description in 'phylink_create' lib/genalloc.c:1: warning: 'gen_pool_add_virt' not found lib/genalloc.c:1: warning: 'gen_pool_alloc' not found lib/genalloc.c:1: warning: 'gen_pool_free' not found lib/genalloc.c:1: warning: 'gen_pool_alloc_algo' not found include/linux/bitmap.h:341: warning: Function parameter or member 'nbits' not described in 'bitmap_or_equal' include/linux/rculist.h:374: warning: Excess function parameter 'cond' description in 'list_for_each_entry_rcu' include/linux/rculist.h:651: warning: Excess function parameter 'cond' description in 'hlist_for_each_entry_rcu' mm/util.c:1: warning: 'get_user_pages_fast' not found mm/slab.c:4215: warning: Function parameter or member 'objp' not described in '__ksize' include/drm/drm_modeset_helper_vtables.h:1052: warning: Function parameter or member 'prepare_writeback_job' not described in 'drm_connector_helper_funcs' include/drm/drm_modeset_helper_vtables.h:1052: warning: Function parameter or member 'cleanup_writeback_job' not described in 'drm_connector_helper_funcs' include/drm/drm_gem_shmem_helper.h:87: warning: Function parameter or member 'madv' not described in 'drm_gem_shmem_object' include/drm/drm_gem_shmem_helper.h:87: warning: Function parameter or member 'madv_list' not described in 'drm_gem_shmem_object' drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Enum value 'DPLL_ID_TGL_MGPLL5' not described in enum 'intel_dpll_id' drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Enum value 'DPLL_ID_TGL_MGPLL6' not described in enum 'intel_dpll_id' drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Excess enum value 'DPLL_ID_TGL_TCPLL5' description in 'intel_dpll_id' drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Excess enum value 'DPLL_ID_TGL_TCPLL6' description in 'intel_dpll_id' drivers/gpu/drm/i915/display/intel_dpll_mgr.h:342: warning: Function parameter or member 'wakeref' not described in 'intel_shared_dpll' Error: Cannot open file drivers/gpu/drm/i915/i915_gem_batch_pool.c Error: Cannot open file drivers/gpu/drm/i915/i915_gem_batch_pool.c Error: Cannot open file drivers/gpu/drm/i915/i915_gem_batch_pool.c drivers/gpu/drm/i915/i915_drv.h:1129: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source The OA context specific information. drivers/gpu/drm/i915/i915_drv.h:1143: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source State of the OA buffer. drivers/gpu/drm/i915/i915_drv.h:1154: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Locks reads and writes to all head/tail state drivers/gpu/drm/i915/i915_drv.h:1176: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source One 'aging' tail pointer and one 'aged' tail pointer ready to drivers/gpu/drm/i915/i915_drv.h:1188: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Index for the aged tail ready to read() data up to. drivers/gpu/drm/i915/i915_drv.h:1193: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source A monotonic timestamp for when the current aging tail pointer drivers/gpu/drm/i915/i915_drv.h:1199: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Although we can always read back the head pointer register, drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'pinned_ctx' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'specific_ctx_id' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'specific_ctx_id_mask' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'poll_check_timer' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'poll_wq' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'pollin' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'periodic' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'period_exponent' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 'oa_buffer' not described in 'i915_perf_stream' drivers/gpu/drm/i915/i915_drv.h:1129: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source The OA context specific information. drivers/gpu/drm/i915/i915_drv.h:1143: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source State of the OA buffer. drivers/gpu/drm/i915/i915_drv.h:1154: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Locks reads and writes to all head/tail state drivers/gpu/drm/i915/i915_drv.h:1176: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source One 'aging' tail pointer and one 'aged' tail pointer ready to drivers/gpu/drm/i915/i915_drv.h:1188: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Index for the aged tail ready to read() data up to. drivers/gpu/drm/i915/i915_drv.h:1193: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source A monotonic timestamp for when the current aging tail pointer drivers/gpu/drm/i915/i915_drv.h:1199: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Although we can always read back the head pointer register, drivers/gpu/drm/i915/i915_drv.h:1129: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source The OA context specific information. drivers/gpu/drm/i915/i915_drv.h:1143: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source State of the OA buffer. drivers/gpu/drm/i915/i915_drv.h:1154: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Locks reads and writes to all head/tail state drivers/gpu/drm/i915/i915_drv.h:1176: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source One 'aging' tail pointer and one 'aged' tail pointer ready to drivers/gpu/drm/i915/i915_drv.h:1188: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Index for the aged tail ready to read() data up to. drivers/gpu/drm/i915/i915_drv.h:1193: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source A monotonic timestamp for when the current aging tail pointer drivers/gpu/drm/i915/i915_drv.h:1199: warning: Incorrect use of kernel-doc format: Documentation Makefile include scripts source Although we can always read back the head pointer register, include/net/cfg80211.h:1185: warning: Function parameter or member 'txpwr' not described in 'station_parameters' include/net/mac80211.h:4056: warning: Function parameter or member 'sta_set_txpwr' not described in 'ieee80211_ops' include/net/mac80211.h:2018: warning: Function parameter or member 'txpwr' not described in 'ieee80211_sta' Documentation/admin-guide/perf/imx-ddr.rst:21: WARNING: Unexpected indentation. Documentation/admin-guide/perf/imx-ddr.rst:34: WARNING: Unexpected indentation. Documentation/admin-guide/perf/imx-ddr.rst:40: WARNING: Unexpected indentation. Documentation/admin-guide/perf/imx-ddr.rst:45: WARNING: Unexpected indentation. Documentation/admin-guide/perf/imx-ddr.rst:52: WARNING: Unexpected indentation. Documentation/hwmon/inspur-ipsps1.rst:2: WARNING: Title underline too short. vim +796 drivers/gpu/drm/drm_prime.c 3248877ea17969 Dave Airlie 2011-11-25 781 7698799f9554de Noralf Trønnes 2018-11-10 782 /** b283e92a2315f9 Daniel Vetter 2019-06-18 783 * drm_prime_pages_to_sg - converts a page array into an sg list b283e92a2315f9 Daniel Vetter 2019-06-18 784 * @pages: pointer to the array of page pointers to convert b283e92a2315f9 Daniel Vetter 2019-06-18 785 * @nr_pages: length of the page vector 7698799f9554de Noralf Trønnes 2018-11-10 786 * b283e92a2315f9 Daniel Vetter 2019-06-18 787 * This helper creates an sg table object from a set of pages b283e92a2315f9 Daniel Vetter 2019-06-18 788 * the driver is responsible for mapping the pages into the b283e92a2315f9 Daniel Vetter 2019-06-18 789 * importers address space for use with dma_buf itself. 805dc614d58a8f Daniel Vetter 2019-06-20 790 * 805dc614d58a8f Daniel Vetter 2019-06-20 791 * This is useful for implementing &drm_gem_object_funcs.get_sg_table. 7698799f9554de Noralf Trønnes 2018-11-10 792 */ 1de4affc36781c Gerd Hoffmann 2019-09-09 793 struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev, 1de4affc36781c Gerd Hoffmann 2019-09-09 794 struct page **pages, unsigned int nr_pages) 7698799f9554de Noralf Trønnes 2018-11-10 795 { b283e92a2315f9 Daniel Vetter 2019-06-18 @796 struct sg_table *sg = NULL; 1de4affc36781c Gerd Hoffmann 2019-09-09 797 size_t max_segment; 7698799f9554de Noralf Trønnes 2018-11-10 798 int ret; 7698799f9554de Noralf Trønnes 2018-11-10 799 b283e92a2315f9 Daniel Vetter 2019-06-18 800 sg = kmalloc(sizeof(struct sg_table), GFP_KERNEL); b283e92a2315f9 Daniel Vetter 2019-06-18 801 if (!sg) { 10fdb7d2ad4244 Noralf Trønnes 2018-11-21 802 ret = -ENOMEM; 10fdb7d2ad4244 Noralf Trønnes 2018-11-21 803 goto out; 10fdb7d2ad4244 Noralf Trønnes 2018-11-21 804 } 10fdb7d2ad4244 Noralf Trønnes 2018-11-21 805 1de4affc36781c Gerd Hoffmann 2019-09-09 806 max_segment = dma_max_mapping_size(dev->dev); 1de4affc36781c Gerd Hoffmann 2019-09-09 807 if (max_segment > SCATTERLIST_MAX_SEGMENT) 1de4affc36781c Gerd Hoffmann 2019-09-09 808 max_segment = SCATTERLIST_MAX_SEGMENT; 1de4affc36781c Gerd Hoffmann 2019-09-09 809 ret = __sg_alloc_table_from_pages(sg, pages, nr_pages, 0, 1de4affc36781c Gerd Hoffmann 2019-09-09 810 nr_pages << PAGE_SHIFT, 1de4affc36781c Gerd Hoffmann 2019-09-09 811 max_segment, GFP_KERNEL); 7698799f9554de Noralf Trønnes 2018-11-10 812 if (ret) 10fdb7d2ad4244 Noralf Trønnes 2018-11-21 813 goto out; 7698799f9554de Noralf Trønnes 2018-11-10 814 b283e92a2315f9 Daniel Vetter 2019-06-18 815 return sg; b283e92a2315f9 Daniel Vetter 2019-06-18 816 out: b283e92a2315f9 Daniel Vetter 2019-06-18 817 kfree(sg); b283e92a2315f9 Daniel Vetter 2019-06-18 818 return ERR_PTR(ret); b283e92a2315f9 Daniel Vetter 2019-06-18 819 } b283e92a2315f9 Daniel Vetter 2019-06-18 820 EXPORT_SYMBOL(drm_prime_pages_to_sg); 7698799f9554de Noralf Trønnes 2018-11-10 821 :::::: The code at line 796 was first introduced by commit :::::: b283e92a2315f9368dda010c9633183147fe87e0 drm/prime: Shuffle functions. :::::: TO: Daniel Vetter <daniel.vetter(a)ffwll.ch&gt; :::::: CC: Daniel Vetter <daniel.vetter(a)ffwll.ch&gt; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation