alsactl triggers kernel warning
#1
I just noticed that alsactl triggers a kernel warning whenever I try to use it with the sunxi audiocodec modules loaded:

Code:
[  264.405729] ------------[ cut here ]------------
[  264.410878] WARNING: at drivers/clk/clk.c:781 __clk_disable+0x40/0x78()
[  264.418191] Modules linked in: sunxi_i2s sunxi_codec sunxi_sndcodec bnep hci_uart bluetooth vfe_v4l2 videobuf2_dma_contig videobuf2_memops mali(O) ir_lirc_codec lirc_dev ir_sony_decoder ir_sanyo_decoder ir_jvc_decoder ir_rc6_decoder videobuf2_core ir_rc5_decoder vfe_io ir_nec_decoder ir_mce_kbd_decoder ss sunxi_ir_rx cedar_ve 8723bs cfg80211
[  264.451824] CPU: 3 PID: 1821 Comm: alsactl Tainted: G           O 3.10.102-0-pine64-longsleep #7
[  264.461540] Call trace:
[  264.464254] [<ffffffc000088388>] dump_backtrace+0x0/0x118
[  264.470229] [<ffffffc0000884c4>] show_stack+0x24/0x30
[  264.475824] [<ffffffc00070e6a0>] dump_stack+0x20/0x28
[  264.481416] [<ffffffc0000addb8>] warn_slowpath_common+0x80/0xa8
[  264.487967] [<ffffffc0000adf1c>] warn_slowpath_null+0x3c/0x4c
[  264.494325] [<ffffffc0005a3fa4>] __clk_disable+0x40/0x78
[  264.500202] [<ffffffc0005a4004>] clk_disable+0x28/0x3c
[  264.505896] [<ffffffbffc5147e4>] set_src_function+0x100/0x190 [sunxi_codec]
[  264.513604] [<ffffffc0005b62d8>] snd_ctl_elem_write+0xd4/0x148
[  264.520060] [<ffffffc0005b7dc0>] snd_ctl_ioctl+0x3b4/0x708
[  264.526132] [<ffffffc0001c0074>] vfs_ioctl+0x4c/0x6c
[  264.531625] [<ffffffc0001c09fc>] do_vfs_ioctl+0x4a4/0x538
[  264.537597] [<ffffffc0001c0af8>] SyS_ioctl+0x68/0x98
[  264.543086] ---[ end trace 072b838cd4b4f7fb ]---
[  264.548340] ------------[ cut here ]------------
[  264.554787] WARNING: at drivers/clk/clk.c:690 __clk_unprepare+0x34/0x84()
[  264.562369] Modules linked in: sunxi_i2s sunxi_codec sunxi_sndcodec bnep hci_uart bluetooth vfe_v4l2 videobuf2_dma_contig videobuf2_memops mali(O) ir_lirc_codec lirc_dev ir_sony_decoder ir_sanyo_decoder ir_jvc_decoder ir_rc6_decoder videobuf2_core ir_rc5_decoder vfe_io ir_nec_decoder ir_mce_kbd_decoder ss sunxi_ir_rx cedar_ve 8723bs cfg80211
[  264.596282] CPU: 3 PID: 1821 Comm: alsactl Tainted: G        W  O 3.10.102-0-pine64-longsleep #7
[  264.606027] Call trace:
[  264.609584] [<ffffffc000088388>] dump_backtrace+0x0/0x118
[  264.615564] [<ffffffc0000884c4>] show_stack+0x24/0x30
[  264.621206] [<ffffffc00070e6a0>] dump_stack+0x20/0x28
[  264.627014] [<ffffffc0000addb8>] warn_slowpath_common+0x80/0xa8
[  264.633613] [<ffffffc0000adf1c>] warn_slowpath_null+0x3c/0x4c
[  264.640173] [<ffffffc0005a4a5c>] __clk_unprepare+0x34/0x84
[  264.646245] [<ffffffc0005a4ad0>] clk_unprepare+0x24/0x34
[  264.652171] [<ffffffbffc5147ec>] set_src_function+0x108/0x190 [sunxi_codec]
[  264.660088] [<ffffffc0005b62d8>] snd_ctl_elem_write+0xd4/0x148
[  264.666546] [<ffffffc0005b7dc0>] snd_ctl_ioctl+0x3b4/0x708
[  264.672664] [<ffffffc0001c0074>] vfs_ioctl+0x4c/0x6c
[  264.678366] [<ffffffc0001c09fc>] do_vfs_ioctl+0x4a4/0x538
[  264.684343] [<ffffffc0001c0af8>] SyS_ioctl+0x68/0x98
[  264.689874] ---[ end trace 072b838cd4b4f7fc ]---
debian@pine64:~$ lsmod
Module                  Size  Used by
sunxi_i2s              13081  2
sunxi_codec            63040  1
sunxi_sndcodec         17150  1
bnep                   17511  2
hci_uart               27742  1
bluetooth             195943  21 bnep,hci_uart
vfe_v4l2              747618  0
videobuf2_dma_contig    17668  1 vfe_v4l2
videobuf2_memops       12546  1 videobuf2_dma_contig
mali                  199851  0
ir_lirc_codec          12756  0
lirc_dev               17032  1 ir_lirc_codec
ir_sony_decoder        12489  0
ir_sanyo_decoder       12491  0
ir_jvc_decoder         12487  0
ir_rc6_decoder         12520  0
videobuf2_core         30952  1 vfe_v4l2
ir_rc5_decoder         12487  0
vfe_io                 34085  1 vfe_v4l2
ir_nec_decoder         12487  0
ir_mce_kbd_decoder     12628  0
ss                     33083  0
sunxi_ir_rx            12902  0
cedar_ve               17368  0
8723bs               1365012  0
cfg80211              374207  1 8723bs


Is that something that can be safely ignored? Trying to look at the referenced code in /drivers/clk/clk.c now....
Come have a chat in the Pine IRC channel >>


Messages In This Thread
alsactl triggers kernel warning - by xalius - 07-09-2016, 02:08 PM
RE: alsactl triggers kernel warning - by xalius - 07-10-2016, 04:11 AM

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