[Buildroot] EP9302 Sound and/or Module-Init-Tools: No such file or directory?

[Buildroot] EP9302 Sound and/or Module-Init-Tools: No such file or directory?

[Andrew Wiley]

I'm trying to get sound working on my EP9302, and it *seems* like ALSA has a
driver for the the card (I think it's a CS4271?) somewhere, but I'm having
issues figuring out exactly how to set it up. My first reaction was to
enable everything ALSA-related that looked useful in the kernel config
(space isn't an issue for me) and try to run alsaconf on the board in hopes
that everything would Just Work.
As it turns out, alsaconf depends on module-init-tools (it crashed because
it couldn't find modinfo), so I added that to my packages, rebuild the
image, and tried again. Now my board is failing to load any kernel modules
because modprobe always returns "No such file or directory" even though I
can use insmod directly and load the modules correctly. The modules are in
the right place, but modprobe isn't finding them. Here's an example:
# lsmod
Module                  Size  Used by
# modprobe zd1211rw
WARNING: Could not open 'kernel/net/wireless/cfg80211.ko': No such file or
directory
WARNING: Could not open 'kernel/net/mac80211/mac80211.ko': No such file or
directory
WARNING: Could not open 'kernel/drivers/base/firmware_class.ko': No such
file or directory
FATAL: Could not open 'kernel/drivers/net/wireless/zd1211rw/zd1211rw.ko': No
such file or directory
# insmod /lib/modules/2.6.32.3/kernel/net/wireless/cfg80211.ko
cfg80211: Calling CRDA to update world regulatory domain
# insmod /lib/modules/2.6.32.3/kernel/net/mac80211/mac80211.ko
# insmod /lib/modules/2.6.32.3/kernel/drivers/base/firmware_class.ko
# insmod /lib/modules/
2.6.32.3/kernel/drivers/net/wireless/zd1211rw/zd1211rw.ko
usb 1-1: reset full speed USB device using ep93xx-ohci and address 2
usb 1-1: reset full speed USB device using ep93xx-ohci and address 2
zd1211rw: probe of 1-1:1.0 failed with error -2
usbcore: registered new interface driver zd1211rw
# uname -r
2.6.32.3
#

I'm guessing the first thing you'll ask for is an strace of a modprobe call,
so I'll get strace onto my root and get that up in a few minutes.

Thanks for any help you can provide,
Andrew Wiley
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[Buildroot] EP9302 Sound and/or Module-Init-Tools: No such file or directory?

[Andrew Wiley]

Here's the strace output:

execve("/sbin/modprobe", ["modprobe", "zd1211rw"], [/* 16 vars */]) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40005000
open("/lib/libc.so.0", O_RDONLY)        = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=313971, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40006000
read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\0\251\0\0004\0\0\0T"...,
4096) = 4096
mmap2(NULL, 364544, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x4000e000
mmap2(0x4000e000, 307024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0)
= 0x4000e000
mmap2(0x40061000, 5064, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x4b) = 0x40061000
mmap2(0x40063000, 15024, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40063000
close(3)                                = 0
munmap(0x40006000, 4096)                = 0
stat("/lib/ld-uClibc.so.0", {st_mode=S_IFREG|0755, st_size=21200, ...}) = 0
mprotect(0x40061000, 4096, PROT_READ)   = 0
mprotect(0x4000c000, 4096, PROT_READ)   = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B57600 opost isig icanon echo ...})
= 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e893c) = -1 ENOTTY
(Inappropriate ioctl for device)
uname({sys="Linux", node="buildroot", ...}) = 0
fstat(2, {st_mode=S_IFREG|0644, st_size=1291, ...}) = 0
brk(0)                                  = 0x16000
brk(0x17000)                            = 0x17000
open("/etc/modprobe.conf", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = -1 ENOENT (No
such file or directory)
open("/etc/modprobe.conf", O_RDONLY)    = -1 ENOENT (No such file or
directory)
open("/etc/modprobe.d", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = -1 ENOENT (No
such file or directory)
open("/etc/modprobe.d", O_RDONLY)       = -1 ENOENT (No such file or
directory)
brk(0x18000)                            = 0x18000
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e890c) = -1 EBADF (Bad
file descriptor)
brk(0x19000)                            = 0x19000
open("/lib/modules/2.6.32.3/modules.dep", O_RDONLY) = 3
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e896c) = -1 ENOTTY
(Inappropriate ioctl for device)
read(3, "kernel/crypto/ecb.ko:\nkernel/cryp"..., 4096) = 4096
close(3)                                = 0
open("kernel/net/wireless/cfg80211.ko", O_RDWR) = -1 ENOENT (No such file or
directory)
open("kernel/net/wireless/cfg80211.ko", O_RDONLY) = -1 ENOENT (No such file
or directory)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e875c) = -1 EBADF (Bad
file descriptor)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e874c) = -1 EBADF (Bad
file descriptor)
brk(0x1a000)                            = 0x1a000
write(2, "WARNING: Could not open 'kernel/n"..., 85WARNING: Could not open
'kernel/net/wireless/cfg80211.ko': No such file or directory
) = 85
open("kernel/net/mac80211/mac80211.ko", O_RDWR) = -1 ENOENT (No such file or
directory)
open("kernel/net/mac80211/mac80211.ko", O_RDONLY) = -1 ENOENT (No such file
or directory)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e87cc) = -1 EBADF (Bad
file descriptor)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e87bc) = -1 EBADF (Bad
file descriptor)
write(2, "WARNING: Could not open 'kernel/n"..., 85WARNING: Could not open
'kernel/net/mac80211/mac80211.ko': No such file or directory
) = 85
open("kernel/drivers/base/firmware_class.ko", O_RDWR) = -1 ENOENT (No such
file or directory)
open("kernel/drivers/base/firmware_class.ko", O_RDONLY) = -1 ENOENT (No such
file or directory)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e883c) = -1 EBADF (Bad
file descriptor)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e882c) = -1 EBADF (Bad
file descriptor)
write(2, "WARNING: Could not open 'kernel/d"..., 91WARNING: Could not open
'kernel/drivers/base/firmware_class.ko': No such file or directory
) = 91
open("kernel/drivers/net/wireless/zd1211rw/zd1211rw.ko", O_RDWR) = -1 ENOENT
(No such file or directory)
open("kernel/drivers/net/wireless/zd1211rw/zd1211rw.ko", O_RDONLY) = -1
ENOENT (No such file or directory)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e88ac) = -1 EBADF (Bad
file descriptor)
ioctl(2147483647, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbe9e889c) = -1 EBADF (Bad
file descriptor)
write(2, "FATAL: Could not open 'kernel/dri"..., 100FATAL: Could not open
'kernel/drivers/net/wireless/zd1211rw/zd1211rw.ko': No such file or
directory
) = 100
exit(1)                                 = ?


It looks like it's only searching in the current directory, and modprobe
does start working when I go to /lib/modules/2.6.32.3, but I don't
understand why that would happen. I don't have a modprobe.conf, but from
what I'm reading, that shouldn't matter when the path is determined?
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