linux-kernel - [clangbuiltlinux:instrumentation2 91/91] drivers/misc/mei/interrupt.o: warning: objtool: mei_irq_write_handler.part.0() falls through to next function mei_irq_write

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Message-ID: <202201310516.HfJRtwoh-lkp@intel.com>
Date:   Mon, 31 Jan 2022 06:28:28 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [clangbuiltlinux:instrumentation2 91/91]
 drivers/misc/mei/interrupt.o: warning: objtool:
 mei_irq_write_handler.part.0() falls through to next function
 mei_irq_write_handler()

tree:   https://github.com/ClangBuiltLinux/linux instrumentation2
head:   a6c990592cb23c14052c5c7b9caab08b5a30a387
commit: a6c990592cb23c14052c5c7b9caab08b5a30a387 [91/91] x86: bug.h: inline ASM_UD2
config: x86_64-buildonly-randconfig-r001-20220124 (https://download.01.org/0day-ci/archive/20220131/202201310516.HfJRtwoh-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/ClangBuiltLinux/linux/commit/a6c990592cb23c14052c5c7b9caab08b5a30a387
        git remote add clangbuiltlinux https://github.com/ClangBuiltLinux/linux
        git fetch --no-tags clangbuiltlinux instrumentation2
        git checkout a6c990592cb23c14052c5c7b9caab08b5a30a387
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/ block// crypto// drivers/ fs// init// ipc// kernel// lib// mm// security/ sound/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/misc/mei/interrupt.o: warning: objtool: mei_irq_write_handler.part.0() falls through to next function mei_irq_write_handler()
--
>> drivers/mfd/retu-mfd.o: warning: objtool: retu_regmap_read() falls through to next function retu_regmap_write()
>> drivers/mfd/retu-mfd.o: warning: objtool: retu_regmap_write() falls through to next function retu_probe()
--
>> drivers/dma/ti/edma.o: warning: objtool: edma_tx_status() falls through to next function dma_irq_handler()
   drivers/dma/ti/edma.o: warning: objtool: dma_irq_handler() falls through to next function edma_alloc_slot()
--
>> drivers/dma/ti/omap-dma.o: warning: objtool: omap_dma_tx_status() falls through to next function omap_dma_irq()
>> drivers/dma/ti/omap-dma.o: warning: objtool: omap_dma_irq() falls through to next function omap_dma_prep_dma_memcpy()
--
>> drivers/dma/dw/core.o: warning: objtool: dwc_descriptor_complete() falls through to next function dwc_scan_descriptors()
>> drivers/dma/dw/core.o: warning: objtool: dwc_free_chan_resources() falls through to next function do_dw_dma_on()
--
>> drivers/nvdimm/btt.o: warning: objtool: btt_rw_page() falls through to next function btt_freelist_init()
--
>> drivers/gpu/drm/gma500/psb_intel_lvds.o: warning: objtool: psb_intel_lvds_set_brightness() falls through to next function psb_intel_lvds_init()
--
>> drivers/gpu/drm/gma500/psb_irq.o: warning: objtool: psb_disable_pipestat.part.0() falls through to next function psb_enable_pipestat.part.0()
>> drivers/gpu/drm/gma500/psb_irq.o: warning: objtool: psb_enable_pipestat.part.0() falls through to next function psb_enable_pipestat()
>> drivers/gpu/drm/gma500/psb_irq.o: warning: objtool: psb_enable_vblank() falls through to next function psb_disable_vblank()
--
>> drivers/gpu/drm/tidss/tidss_irq.o: warning: objtool: tidss_irq_update() falls through to next function tidss_irq_handler()
--
>> sound/virtio/virtio_ctl_msg.o: warning: objtool: virtsnd_ctl_msg_request() falls through to next function virtsnd_ctl_msg_response()
>> sound/virtio/virtio_ctl_msg.o: warning: objtool: virtsnd_ctl_msg_response() falls through to next function virtsnd_ctl_msg_alloc()
--
>> crypto/keywrap.o: warning: objtool: crypto_kw_scatterlist_ff() falls through to next function crypto_kw_decrypt()
..

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org