BUG-REPORT Re: ml403 ac97 driver

[Qin Lin <linkinge@gmail.com>]

HI Joachim


When i used the aplay to test the drive first time,it played well. But 
after restart the board 
it is not well again.

Qin Lin

# aplay yonggan.wav
Playing WAVE 'yonggan.wav' : Signed 16 bit Little Endian, Rate 44100 Hz,
Stereo
[  258.518119] Kernel stack overflow in process c039ec00, r1=c3e0bf50

#strace  aplay yonggan.wav
......................
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7701,
...}) = 0
open("/dev/snd/controlC0", O_RDONLY)    = 3
close(3)                                = 0
open("/dev/snd/controlC0", O_RDWR)      = 3
ioctl(3, USBDEVFS_CONTROL, 0x7f9a25b8)  = 0
ioctl(3, 0x41785501, 0x7f9a2560)        = 0
close(3)                                = 0
open("/dev/snd/controlC0", O_RDONLY)    = 3
close(3)                                = 0
open("/dev/snd/controlC0", O_RDWR)      = 3
ioctl(3, USBDEVFS_CONTROL, 0x7f9a2808)  = 0
ioctl(3, 0x80045532, 0x7f9a2838)        = 0
open("/dev/snd/pcmC0D0p", O_RDWR|O_NONBLOCK) = 4
close(3)                                = 0
ioctl(4, AGPIOC_ACQUIRE or APM_IOC_STANDBY, 0x7f9a2718) = 0
fcntl64(4, F_GETFL)                     = 0x802 (flags O_RDWR|O_NONBLOCK)
ioctl(4, AGPIOC_INFO, 0x7f9a2688)       = 0
ioctl(4, AGPIOC_RELEASE or APM_IOC_SUSPEND, 0x7f9a2690) = 0
mmap(NULL, 4096, PROT_READ, MAP_SHARED, 4, 0x80000000) = 0x30018000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, 4, 0x81000000) =
0x30019000
fcntl64(4, F_GETFL)                     = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl64(4, F_SETFL, O_RDWR)             = 0
ioctl(4, AGPIOC_ACQUIRE or APM_IOC_STANDBY, 0x7f9a2c60) = 0
rt_sigaction(SIGINT, {0xfdabf30, [INT], SA_RESTART}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGTERM, {0xfdabf30, [TERM], SA_RESTART}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGABRT, {0xfdabf30, [ABRT], SA_RESTART}, {SIG_DFL}, 8) = 0
open("yonggan.wav", O_RDONLY|O_LARGEFILE) = 3
read(3, "RIFF$VR\0WAVEfmt \20\0\0\0\1\0\2\0", 24) = 24
read(3, "D\254", 2)                     = 2
read(3, "\0\0\20\261\2\0\4\0\20\0", 10) = 10
read(3, "data\\TR\0", 8)                = 8
write(2, "Playing WAVE \'yonggan.wav\' : ", 29Playing WAVE 'yonggan.wav' : )
= 29
write(2, "Signed 16 bit Little Endian, ", 29Signed 16 bit Little Endian, ) =
29
write(2, "Rate 44100 Hz, ", 15Rate 44100 Hz, )         = 15
write(2, "Stereo", 6Stereo)                   = 6
write(2, "\n", 1
)                       = 1
ioctl(4, 0xc25c4110, 0x7f9a2518)        = 0
ioctl(4, 0xc25c4110, 0x7f9a21b0)        = 0
ioctl(4, 0xc25c4110, 0x7f9a21b0)        = 0
ioctl(4, 0xc25c4110, 0x7f9a2518)        = 0
ioctl(4, 0xc25c4110, 0x7f9a21b0)        = 0
ioctl(4, 0xc25c4110, 0x7f9a21b0)        = 0
ioctl(4, 0xc25c4110, 0x7f9a2518)        = 0
ioctl(4, 0xc25c4110, 0x7f9a2298)        = 0
ioctl(4, 0xc25c4110, 0x7f9a1f30)        = 0
ioctl(4, 0xc25c4110, 0x7f9a1f30)        = 0
ioctl(4, 0xc25c4110, 0x7f9a2298)        = 0
ioctl(4, 0xc25c4110, 0x7f9a2298[  213.220781] Kernel stack overflow in
process c039c030, r1=c0395f50


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