• Anton Vorontsov's avatar
    [ALSA] soc - fsl_ssi.c fix "BUG: scheduling while atomic" · 3a3bd960
    Anton Vorontsov authored
    This patch fixes following bug caught with PREEMPT enabled:
    
    root@b1:~# cat /dev/dsp > /dev/null
    BUG: scheduling while atomic: cat/965/0x00000003
    Call Trace:
    [df165ce0] [c0008e84] show_stack+0x4c/0x1ac (unreliable)
    [df165d20] [c001c18c] __schedule_bug+0x64/0x78
    [df165d30] [c02b3344] schedule+0x2d8/0x334
    [df165d70] [c02b3674] schedule_timeout+0x64/0xe4
    [df165db0] [c002c05c] msleep+0x1c/0x34
    [df165dc0] [c01f2fe0] fsl_ssi_trigger+0x130/0x144
    [df165dd0] [c01ece54] soc_pcm_trigger+0x94/0xb8
    [df165df0] [c01da764] snd_pcm_do_start+0x48/0x60
    [df165e00] [c01da630] snd_pcm_action_single+0x4c/0xb4
    [df165e20] [c01e0f50] snd_pcm_lib_read1+0x2a0/0x2d4
    [df165e70] [c01ec274] snd_pcm_oss_read3+0xf0/0x13c
    [df165eb0] [c01ec2e4] snd_pcm_oss_read2+0x24/0x4c
    [df165ec0] [c01ec4ac] snd_pcm_oss_read+0x1a0/0x1f0
    [df165ef0] [c0076478] vfs_read+0xb4/0x108
    [df165f10] [c00768cc] sys_read+0x4c/0x90
    [df165f40] [c00117a4] ret_from_syscall+0x0/0x38
    Acked-by: default avatarTimur Tabi <timur@freescale.com>
    Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    3a3bd960
fsl_ssi.c 18.1 KB