Issue:

If I play the wav file using "aplay", underrun error occurs.

I am suspecting the issue in driver or in kernel code.

I am using the following setup:

a) Application and Library:
aplay in alsa-utils-1.0.16 and alsa-lib-1.0.16.
b) Platform: imx27
c) kernel: linux-2.6.25

Hardware & Software parameters for aplay:

I am using Debian Lenny with 2.6.30 kernel on my Intel Atom Poulsbo chipset computer and I get the following messages in my dmesg when I start the X server:


[ 22.760737] mtrr: type mismatch for 3ffc0000,10000 old: write-back new: write-combining
[ 22.760805] mtrr: type mismatch for 3ff80000,40000 old: write-back new: write-combining

Hello,
could anyone save me from recompiling the whole kernel and rebooting, if I need tun.ko?

I want to use a vanilla kernel on my embedded x86 machine.
I have 3 options:
1. Run Dan kegel's last script: it uses 2.6.15.4
2. Use the LFS 6.4: It uses 2.6.27.4
3. Use the last version in kernel.org: 2.6.30.1, But with what tools version ?

can anyone explain the metadata btree structure of btrfs ??

HI

I want know can I give priority between serial ports, in case if three serial ports receive data at same interval (1 second) with different lengths of data say 64 bytes (512 bits), 16 bytes (128 bits) and 4 bytes (32 bits).
Is it required to give priority considering data is supposed to be received at same interval? Please enlighten me...

Hii

Hi,

I would like to know if "Command could be aborted by ahci driver just after filling the command FIS (H2D command FIS is filled using ahci_qc_prep), how this could be reported back to upper layers gracefully".

Will highly appreciate any clue or suggestion on this.

Regards,
Stan

I have been using Linux kernel 2.6.28 with at91sam9263 processor and arm-none-eabi-gcc toolchain
I am able to start kernel execution from the RAM.

I am passing command line partition argument [bootargs=console=ttyS0;115200 root=mtd5 mtdparts=physmap-flash.0:128K(bootstrap)ro,256k(uboot),128k(env1),128(env2),2M(Linux),-(root); rw rootfstype=jffs2]

I noticed that a little test program which calls nanosleep is showing a huge difference in CPU usage when run on Linux machines with a kernel newer than 2.6.22.

#include
int main (void)
{
struct timespec sleepTime;
struct timespec returnTime;
sleepTime.tv_sec = 0;
sleepTime.tv_nsec = 1000;
while (1)
{
nanosleep(&sleepTime, &returnTime);
}

i am trying to flash rootfs (root.jffs2) on pyhtec iMX27 board with ARM on it .
i've properly configured the switch on the board for NAND boot .
the same root.jffs2 image works fine with NOR setting but not with NAND .
NFS port have been configured properly since it works fine with NOR .

Hi All,

How do i detect the insertion/removal of external devices like SDCard, USB drives etc.,
Somebody told to use "udev". I want to do my C program. Please anybody help me.

Hello,

We have the following question regarding the (re-)allocation of dma-able memory for a PCIe device. We want to know on which CPU / Memory controller the dma-able memory will be allocated. In addition we would like to know how we can control this allocation process, or how to reroute it to another CPU / Memory controller.