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器件型号：TLV320AIC3204 您好*：
这个问题之前有人提出过、但上一个线程(请参阅 此处)已关闭、但未提供解决方案。 我们正在对 Raspberry Pi 使用与 Audiosense Pi Hat 相同的设计(相同的原理图、只是不同的外形尺寸 PCB；请参阅 https://github.com/b-ak/audiosense-pi)、并且我会在启动期间看到随机内核堆栈跟踪和"Bug：scheduling while onotic"。 这并不是每次都发生,但我会说,至少1每5个靴子。
这种情况发生在运行 Ubuntu 22.04 (Kernel 5.15.0-1044-raspi)的库存 Raspberry Pi 4 (也适用于400)上。
我看到的输出如下所示：
[ 11.023538] BUG: scheduling while atomic: kworker/u8:2/106/0x00000002 [ 11.031099] Modules linked in: snd_soc_tlv320aic32x4_i2c snd_soc_bcm2835_i2s(+) snd_soc_tlv320aic32x4 snd_soc_audiosense_pi snd_soc_core bcm2835_codec(CE+) bcm2835_v4l2(CE) v4l2_mem2mem bcm2835_isp(CE) bcm2835_mmal_vchiq(CE) snd_compress videobuf2_vmalloc videobuf2_dma_contig ac97_bus videobuf2_memops videobuf2_v4l2 videobuf2_common snd_pcm_dmaengine snd_bcm2835(CE) snd_pcm raspberrypi_hwmon snd_timer videodev mc snd bcm2835_gpiomem vc_sm_cma(CE) nvmem_rmem rpivid_mem uio_pdrv_genirq uio sch_fq_codel dm_multipath drm ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid crct10dif_ce i2c_bcm2835 spi_bcm2835 xhci_pci xhci_pci_renesas phy_generic aes_arm64 [ 11.031324] CPU: 0 PID: 106 Comm: kworker/u8:2 Tainted: G C E 5.15.0-1044-raspi #47-Ubuntu [ 11.031332] Hardware name: Raspberry Pi 400 Rev 1.1 (DT) [ 11.031336] Workqueue: events_unbound deferred_probe_work_func [ 11.031355] Call trace: [ 11.031357] dump_backtrace+0x0/0x200 [ 11.031364] show_stack+0x20/0x30 [ 11.031368] dump_stack_lvl+0x8c/0xb8 [ 11.031374] dump_stack+0x18/0x34 [ 11.031378] __schedule_bug+0x5c/0x74 [ 11.031384] __schedule+0x774/0x8b0 [ 11.031389] schedule+0x70/0x170 [ 11.031394] schedule_timeout+0xa0/0x1c4 [ 11.031399] wait_for_completion_timeout+0x88/0x110 [ 11.031404] bcm2835_i2c_xfer+0xe8/0x3a4 [i2c_bcm2835] [ 11.031414] __i2c_transfer+0xa4/0x4b0 [ 11.031420] i2c_transfer+0x68/0x130 [ 11.031424] regmap_i2c_read+0x64/0xb0 [ 11.031430] _regmap_raw_read+0xb4/0x270 [ 11.031435] _regmap_bus_read+0x4c/0x84 [ 11.031440] _regmap_read+0x80/0x200 [ 11.031445] _regmap_update_bits+0xd4/0x110 [ 11.031450] _regmap_select_page+0xb8/0x160 [ 11.031454] _regmap_raw_read+0x10c/0x270 [ 11.031459] _regmap_bus_read+0x4c/0x84 [ 11.031464] _regmap_read+0x80/0x200 [ 11.031469] regmap_read+0x54/0x80 [ 11.031474] clk_aic32x4_div_recalc_rate+0x40/0x80 [snd_soc_tlv320aic32x4] [ 11.031486] clk_recalc+0x50/0xf0 [ 11.031494] clk_core_update_orphan_child_rates+0x34/0x70 [ 11.031498] clk_core_update_orphan_child_rates+0x50/0x70 [ 11.031503] clk_reparent+0xb0/0x170 [ 11.031507] __clk_set_parent_before+0x4c/0xb0 [ 11.031512] clk_core_set_parent_nolock+0x130/0x3b0 [ 11.031517] clk_set_parent+0x48/0x180 [ 11.031522] aic32x4_component_probe+0x60/0x1b0 [snd_soc_tlv320aic32x4] [ 11.031529] snd_soc_component_probe+0x30/0x84 [snd_soc_core] [ 11.031588] soc_probe_component+0x1dc/0x374 [snd_soc_core] [ 11.031624] snd_soc_bind_card+0x27c/0x7c0 [snd_soc_core] [ 11.031658] snd_soc_register_card+0xf8/0x110 [snd_soc_core] [ 11.031693] audiosense_pi_card_probe+0x6c/0xc4 [snd_soc_audiosense_pi] [ 11.031700] platform_probe+0x70/0x110 [ 11.031705] really_probe+0xd0/0x490 [ 11.031711] __driver_probe_device+0x148/0x190 [ 11.031716] driver_probe_device+0xec/0x180 [ 11.031721] __device_attach_driver+0xe0/0x1b0 [ 11.031727] bus_for_each_drv+0x80/0xe0 [ 11.031733] __device_attach+0xb0/0x210 [ 11.031738] device_initial_probe+0x1c/0x30 [ 11.031742] bus_probe_device+0xa4/0xb0 [ 11.031747] deferred_probe_work_func+0xa4/0xf4 [ 11.031752] process_one_work+0x204/0x4e0 [ 11.031759] worker_thread+0x144/0x490 [ 11.031764] kthread+0x128/0x134 [ 11.031768] ret_from_fork+0x10/0x20 [ 11.035880] BUG: scheduling while atomic: kworker/u8:2/106/0x00000000 [ 11.043475] Modules linked in: snd_soc_tlv320aic32x4_i2c snd_soc_bcm2835_i2s(+) snd_soc_tlv320aic32x4 snd_soc_audiosense_pi snd_soc_core bcm2835_codec(CE+) bcm2835_v4l2(CE) v4l2_mem2mem bcm2835_isp(CE) bcm2835_mmal_vchiq(CE) snd_compress videobuf2_vmalloc videobuf2_dma_contig ac97_bus videobuf2_memops videobuf2_v4l2 videobuf2_common snd_pcm_dmaengine snd_bcm2835(CE) snd_pcm raspberrypi_hwmon snd_timer videodev mc snd bcm2835_gpiomem vc_sm_cma(CE) nvmem_rmem rpivid_mem uio_pdrv_genirq uio sch_fq_codel dm_multipath drm ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid crct10dif_ce i2c_bcm2835 spi_bcm2835 xhci_pci xhci_pci_renesas phy_generic aes_arm64 [ 11.043723] CPU: 0 PID: 106 Comm: kworker/u8:2 Tainted: G WC E 5.15.0-1044-raspi #47-Ubuntu [ 11.043731] Hardware name: Raspberry Pi 400 Rev 1.1 (DT) [ 11.043735] Workqueue: events_unbound deferred_probe_work_func [ 11.043759] Call trace: [ 11.043761] dump_backtrace+0x0/0x200 [ 11.043772] show_stack+0x20/0x30 [ 11.043776] dump_stack_lvl+0x8c/0xb8 [ 11.043783] dump_stack+0x18/0x34 [ 11.043787] __schedule_bug+0x5c/0x74 [ 11.043794] __schedule+0x774/0x8b0 [ 11.043799] schedule+0x70/0x170 [ 11.043803] schedule_timeout+0xa0/0x1c4 [ 11.043809] wait_for_completion_timeout+0x88/0x110 [ 11.043814] bcm2835_i2c_xfer+0xe8/0x3a4 [i2c_bcm2835] [ 11.043824] __i2c_transfer+0xa4/0x4b0 [ 11.043830] i2c_transfer+0x68/0x130 [ 11.043835] regmap_i2c_read+0x64/0xb0 [ 11.043840] _regmap_raw_read+0xb4/0x270 [ 11.043846] _regmap_bus_read+0x4c/0x84 [ 11.043851] _regmap_read+0x80/0x200 [ 11.043855] _regmap_update_bits+0xd4/0x110 [ 11.043861] _regmap_select_page+0xb8/0x160 [ 11.043865] _regmap_raw_read+0x10c/0x270 [ 11.043870] _regmap_bus_read+0x4c/0x84 [ 11.043876] _regmap_read+0x80/0x200 [ 11.043880] _regmap_update_bits+0xd4/0x110 [ 11.043885] regmap_update_bits_base+0x6c/0xa0 [ 11.043890] clk_aic32x4_codec_clkin_set_parent+0x34/0x40 [snd_soc_tlv320aic32x4] [ 11.043902] clk_core_set_parent_nolock+0x158/0x3b0 [ 11.043908] clk_set_parent+0x48/0x180 [ 11.043913] aic32x4_component_probe+0x60/0x1b0 [snd_soc_tlv320aic32x4] [ 11.043921] snd_soc_component_probe+0x30/0x84 [snd_soc_core] [ 11.043980] soc_probe_component+0x1dc/0x374 [snd_soc_core] [ 11.044015] snd_soc_bind_card+0x27c/0x7c0 [snd_soc_core] [ 11.044050] snd_soc_register_card+0xf8/0x110 [snd_soc_core] [ 11.044084] audiosense_pi_card_probe+0x6c/0xc4 [snd_soc_audiosense_pi] [ 11.044092] platform_probe+0x70/0x110 [ 11.044097] really_probe+0xd0/0x490 [ 11.044102] __driver_probe_device+0x148/0x190 [ 11.044108] driver_probe_device+0xec/0x180 [ 11.044113] __device_attach_driver+0xe0/0x1b0 [ 11.044119] bus_for_each_drv+0x80/0xe0 [ 11.044124] __device_attach+0xb0/0x210 [ 11.044129] device_initial_probe+0x1c/0x30 [ 11.044132] bus_probe_device+0xa4/0xb0 [ 11.044137] deferred_probe_work_func+0xa4/0xf4 [ 11.044142] process_one_work+0x204/0x4e0 [ 11.044148] worker_thread+0x144/0x490 [ 11.044153] kthread+0x128/0x134 [ 11.044158] ret_from_fork+0x10/0x20 [ 11.057622] BUG: scheduling while atomic: kworker/u8:2/106/0x00000002 [ 11.065215] Modules linked in: snd_soc_tlv320aic32x4_spi(+) snd_soc_tlv320aic32x4_i2c snd_soc_bcm2835_i2s(+) snd_soc_tlv320aic32x4 snd_soc_audiosense_pi snd_soc_core bcm2835_codec(CE+) bcm2835_v4l2(CE) v4l2_mem2mem bcm2835_isp(CE) bcm2835_mmal_vchiq(CE) snd_compress videobuf2_vmalloc videobuf2_dma_contig ac97_bus videobuf2_memops videobuf2_v4l2 videobuf2_common snd_pcm_dmaengine snd_bcm2835(CE) snd_pcm raspberrypi_hwmon snd_timer videodev mc snd bcm2835_gpiomem vc_sm_cma(CE) nvmem_rmem rpivid_mem uio_pdrv_genirq uio sch_fq_codel dm_multipath drm ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid crct10dif_ce i2c_bcm2835 spi_bcm2835 xhci_pci xhci_pci_renesas phy_generic aes_arm64 [ 11.065465] CPU: 0 PID: 106 Comm: kworker/u8:2 Tainted: G WC E 5.15.0-1044-raspi #47-Ubuntu [ 11.065473] Hardware name: Raspberry Pi 400 Rev 1.1 (DT) [ 11.065479] Workqueue: events_unbound deferred_probe_work_func [ 11.065499] Call trace: [ 11.065501] dump_backtrace+0x0/0x200 [ 11.065510] show_stack+0x20/0x30 [ 11.065515] dump_stack_lvl+0x8c/0xb8 [ 11.065523] dump_stack+0x18/0x34 [ 11.065527] __schedule_bug+0x5c/0x74 [ 11.065534] __schedule+0x774/0x8b0 [ 11.065540] schedule+0x70/0x170 [ 11.065544] schedule_timeout+0xa0/0x1c4 [ 11.065551] wait_for_completion_timeout+0x88/0x110 [ 11.065556] bcm2835_i2c_xfer+0xe8/0x3a4 [i2c_bcm2835] [ 11.065571] __i2c_transfer+0xa4/0x4b0 [ 11.065577] i2c_transfer+0x68/0x130 [ 11.065581] regmap_i2c_read+0x64/0xb0 [ 11.065587] _regmap_raw_read+0xb4/0x270 [ 11.065594] _regmap_bus_read+0x4c/0x84 [ 11.065599] _regmap_read+0x80/0x200 [ 11.065603] _regmap_update_bits+0xd4/0x110 [ 11.065609] _regmap_select_page+0xb8/0x160 [ 11.065614] _regmap_raw_read+0x10c/0x270 [ 11.065619] _regmap_bus_read+0x4c/0x84 [ 11.065624] _regmap_read+0x80/0x200 [ 11.065629] regmap_read+0x54/0x80 [ 11.065633] clk_aic32x4_div_recalc_rate+0x40/0x80 [snd_soc_tlv320aic32x4] [ 11.065649] clk_recalc+0x50/0xf0 [ 11.065659] clk_core_update_orphan_child_rates+0x34/0x70 [ 11.065664] clk_reparent+0xb0/0x170 [ 11.065668] __clk_set_parent_before+0x4c/0xb0 [ 11.065673] clk_core_set_parent_nolock+0x130/0x3b0 [ 11.065678] clk_set_parent+0x48/0x180 [ 11.065683] aic32x4_component_probe+0x6c/0x1b0 [snd_soc_tlv320aic32x4] [ 11.065690] snd_soc_component_probe+0x30/0x84 [snd_soc_core] [ 11.065761] soc_probe_component+0x1dc/0x374 [snd_soc_core] [ 11.065798] snd_soc_bind_card+0x27c/0x7c0 [snd_soc_core] [ 11.065834] snd_soc_register_card+0xf8/0x110 [snd_soc_core] [ 11.065871] audiosense_pi_card_probe+0x6c/0xc4 [snd_soc_audiosense_pi] [ 11.065879] platform_probe+0x70/0x110 [ 11.065884] really_probe+0xd0/0x490 [ 11.065889] __driver_probe_device+0x148/0x190 [ 11.065894] driver_probe_device+0xec/0x180 [ 11.065900] __device_attach_driver+0xe0/0x1b0 [ 11.065905] bus_for_each_drv+0x80/0xe0 [ 11.065910] __device_attach+0xb0/0x210 [ 11.065915] device_initial_probe+0x1c/0x30 [ 11.065919] bus_probe_device+0xa4/0xb0 [ 11.065924] deferred_probe_work_func+0xa4/0xf4 [ 11.065929] process_one_work+0x204/0x4e0 [ 11.065940] worker_thread+0x144/0x490 [ 11.065944] kthread+0x128/0x134 [ 11.065951] ret_from_fork+0x10/0x20 [ 11.066926] BUG: scheduling while atomic: kworker/u8:2/106/0x00000000
因此、如上一 主题中所述、在时钟初始化期间执行 I2C 访问似乎会出现问题。
我可以确认 I2C 总线正常工作、并且 MCLK 始终存在(由一个在通电后立即开始运行的振荡器提供)。
此问题是否曾得到解决？ 是否有适用于该驱动程序的补丁？ 我有什么想法可以尝试解决它？
此致、
肖恩
