Hi Ramalingam, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on next-20180403] [cannot apply to v4.16] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Ramalingam-C/drm-i915-Implement-HDCP2-2/20180404-031743 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: i386-randconfig-a1-201813 (attached as .config) compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers/gpu//drm/i915/intel_dp.c: In function 'intel_dp_hdcp2_read_rx_status': >> drivers/gpu//drm/i915/intel_dp.c:5377:3: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'ssize_t' [-Wformat=] DRM_ERROR("Read bstatus from DP/AUX failed (%ld)\n", ret); ^ In file included from drivers/gpu//drm/i915/intel_dp.c:34:0: drivers/gpu//drm/i915/intel_dp.c: At top level: include/linux/mei_hdcp.h:144:12: warning: 'mei_cldev_register_notify' defined but not used [-Wunused-function] static int mei_cldev_register_notify(struct notifier_block *nb) ^ include/linux/mei_hdcp.h:148:12: warning: 'mei_cldev_unregister_notify' defined but not used [-Wunused-function] static int mei_cldev_unregister_notify(struct notifier_block *nb) ^ Cyclomatic Complexity 5 include/linux/compiler.h:__read_once_size Cyclomatic Complexity 5 include/linux/compiler.h:__write_once_size Cyclomatic Complexity 3 include/linux/string.h:memset Cyclomatic Complexity 4 include/linux/string.h:memcpy Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:ffs Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:fls Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u32 Cyclomatic Complexity 3 include/linux/log2.h:is_power_of_2 Cyclomatic Complexity 1 include/linux/list.h:INIT_LIST_HEAD Cyclomatic Complexity 1 include/linux/err.h:ERR_PTR Cyclomatic Complexity 1 arch/x86/include/asm/atomic.h:atomic_read Cyclomatic Complexity 1 arch/x86/include/asm/atomic.h:atomic_set Cyclomatic Complexity 1 include/asm-generic/atomic-long.h:atomic_long_read Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order Cyclomatic Complexity 1 include/linux/mutex.h:__mutex_owner Cyclomatic Complexity 1 include/linux/mutex.h:mutex_is_locked Cyclomatic Complexity 1 include/linux/jiffies.h:_msecs_to_jiffies Cyclomatic Complexity 3 include/linux/jiffies.h:msecs_to_jiffies Cyclomatic Complexity 1 include/linux/jiffies.h:_usecs_to_jiffies Cyclomatic Complexity 3 include/linux/jiffies.h:usecs_to_jiffies Cyclomatic Complexity 1 include/linux/kasan.h:kasan_kmalloc Cyclomatic Complexity 28 include/linux/slab.h:kmalloc_index Cyclomatic Complexity 1 include/linux/slab.h:kmem_cache_alloc_trace Cyclomatic Complexity 1 include/linux/slab.h:kmalloc_order_trace Cyclomatic Complexity 67 include/linux/slab.h:kmalloc_large Cyclomatic Complexity 5 include/linux/slab.h:kmalloc Cyclomatic Complexity 1 include/linux/slab.h:kzalloc Cyclomatic Complexity 1 include/linux/ww_mutex.h:ww_mutex_is_locked Cyclomatic Complexity 1 include/drm/drm_modeset_lock.h:drm_modeset_is_locked Cyclomatic Complexity 1 include/drm/drm_modeset_helper_vtables.h:drm_connector_helper_add Cyclomatic Complexity 1 include/drm/drm_dp_helper.h:drm_dp_max_lane_count Cyclomatic Complexity 3 include/drm/drm_dp_helper.h:drm_dp_enhanced_frame_cap Cyclomatic Complexity 1 include/drm/drm_dp_helper.h:drm_dp_is_branch Cyclomatic Complexity 1 include/drm/drm_dp_helper.h:drm_dp_has_quirk Cyclomatic Complexity 1 drivers/gpu//drm/i915/i915_reg.h:i915_mmio_reg_offset Cyclomatic Complexity 1 drivers/gpu//drm/i915/i915_reg.h:i915_mmio_reg_equal Cyclomatic Complexity 1 drivers/gpu//drm/i915/i915_reg.h:i915_mmio_reg_valid Cyclomatic Complexity 2 drivers/gpu//drm/i915/i915_utils.h:onoff Cyclomatic Complexity 1 drivers/gpu//drm/i915/i915_drv.h:intel_info Cyclomatic Complexity 1 drivers/gpu//drm/i915/i915_drv.h:msecs_to_jiffies_timeout Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_drv.h:intel_get_crtc_for_pipe Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_drv.h:intel_crtc_has_type Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_drv.h:intel_crtc_has_dp_encoder Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_drv.h:intel_dp_unused_lane_mask Cyclomatic Complexity 3 drivers/gpu//drm/i915/intel_dp.c:intel_dp_rate_limit_len Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_common_len_rate_limit Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_max_common_rate Cyclomatic Complexity 3 drivers/gpu//drm/i915/intel_dp.c:intel_dp_rate_index Cyclomatic Complexity 3 drivers/gpu//drm/i915/intel_dp.c:intel_dp_unpack_aux Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:vlv_pipe_has_pp_on Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:vlv_pipe_has_vdd_on Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:vlv_pipe_any Cyclomatic Complexity 4 drivers/gpu//drm/i915/intel_dp.c:vlv_initial_pps_pipe Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:skl_get_aux_clock_divider Cyclomatic Complexity 2 drivers/gpu//drm/i915/intel_dp.c:skl_get_aux_send_ctl Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_aux_header Cyclomatic Complexity 10 drivers/gpu//drm/i915/intel_dp.c:intel_edp_compare_alt_mode Cyclomatic Complexity 4 drivers/gpu//drm/i915/intel_dp.c:downstream_hpd_needs_d0 Cyclomatic Complexity 7 drivers/gpu//drm/i915/intel_dp.c:gen4_signal_levels Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_autotest_phy_pattern Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_hdcp_toggle_signalling Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_hdcp2_protocol Cyclomatic Complexity 2 drivers/gpu//drm/i915/intel_drv.h:dp_to_dig_port Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_to_dev Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_drv.h:dp_to_lspcon Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_dp.c:intel_dp_max_common_lane_count Cyclomatic Complexity 15 drivers/gpu//drm/i915/intel_dp.c:intel_dpcd_offset_for_hdcp2_msgid Cyclomatic Complexity 8 drivers/gpu//drm/i915/intel_dp.c:intel_dp_hdcp2_timeout_for_msg Cyclomatic Complexity 1 include/linux/err.h:IS_ERR Cyclomatic Complexity 3 include/linux/err.h:IS_ERR_OR_NULL Cyclomatic Complexity 6 drivers/gpu//drm/i915/intel_dp.c:intersect_rates Cyclomatic Complexity 6 drivers/gpu//drm/i915/intel_dp.c:intel_dp_set_common_rates Cyclomatic Complexity 7 drivers/gpu//drm/i915/intel_dp.c:intel_aux_power_domain Cyclomatic Complexity 4 drivers/gpu//drm/i915/intel_dp.c:assert_edp_pll Cyclomatic Complexity 2 drivers/gpu//drm/i915/i915_drv.h:to_i915 Cyclomatic Complexity 6 drivers/gpu//drm/i915/intel_drv.h:enc_to_dig_port Cyclomatic Complexity 1 drivers/gpu//drm/i915/intel_drv.h:enc_to_intel_dp Cyclomatic Complexity 8 drivers/gpu//drm/i915/intel_dp.c:intel_dp_set_clock Cyclomatic Complexity 5 drivers/gpu//drm/i915/intel_dp.c:gm45_digital_port_connected Cyclomatic Complexity 5 drivers/gpu//drm/i915/intel_dp.c:g4x_digital_port_connected Cyclomatic Complexity 5 drivers/gpu//drm/i915/intel_dp.c:ibx_digital_port_connected Cyclomatic Complexity 2 drivers/gpu//drm/i915/intel_dp.c:ilk_digital_port_connected Cyclomatic Complexity 5 drivers/gpu//drm/i915/intel_dp.c:cpt_digital_port_connected Cyclomatic Complexity 2 drivers/gpu//drm/i915/intel_dp.c:snb_digital_port_connected Cyclomatic Complexity 2 drivers/gpu//drm/i915/intel_dp.c:ivb_digital_port_connected Cyclomatic Complexity 2 drivers/gpu//drm/i915/intel_dp.c:bdw_digital_port_connected Cyclomatic Complexity 5 drivers/gpu//drm/i915/intel_dp.c:bxt_digital_port_connected Cyclomatic Complexity 3 drivers/gpu//drm/i915/intel_dp.c:spt_digital_port_connected Cyclomatic Complexity 3 drivers/gpu//drm/i915/intel_dp.c:vlv_active_pipe Cyclomatic Complexity 5 drivers/gpu//drm/i915/intel_dp.c:cnl_max_source_rate vim +5377 drivers/gpu//drm/i915/intel_dp.c 5366 5367 static inline 5368 int intel_dp_hdcp2_read_rx_status(struct intel_digital_port *intel_dig_port, 5369 uint8_t *rx_status) 5370 { 5371 ssize_t ret; 5372 5373 ret = drm_dp_dpcd_read(&intel_dig_port->dp.aux, 5374 DP_HDCP_2_2_REG_RXSTATUS_OFFSET, rx_status, 5375 HDCP_2_2_DP_RXSTATUS_LEN); 5376 if (ret != HDCP_2_2_DP_RXSTATUS_LEN) { > 5377 DRM_ERROR("Read bstatus from DP/AUX failed (%ld)\n", ret); 5378 return ret >= 0 ? -EIO : ret; 5379 } 5380 5381 return 0; 5382 } 5383 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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