No, I do not suspect an error in the snd_pcm_readi(), but would want to print the data(using printk) from the hardware buffer directly, and see that it matches with the buffer after snd_pcm_readi() call. I would want to know where the hardware buffer is located at so that I can trace it down. Regards, Ankhit On Thu, Oct 29, 2015 at 3:06 PM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote: > Ankhit Vivekananda wrote: > > I am trying to print the ring buffer used for DMA transfer using ALSA in > > kernel space. I was able to print the ring buffer in user space after > > calling the snd_pcm_readi() function. But, wanted to know as to which > file > > I need to be looking at to print the hardware buffer in kernel space. > > The driver typically does not access the buffer. There is no such file. > > (And why would you need it? Do you suspect an error in the > implementation of snd_pcm_readi()?) > > > Regards, > Clemens > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
