On Fri, May 15, 2020 at 12:09:39PM +0800, Brent Lu wrote: > The hw_base will be increased by runtime->buffer_size frames > unconditionally if the runtime->status->hw_ptr is not updated for over > half of buffer time. As the hw_base increases, so does the > runtime->status->hw_ptr which could lead to invalid return value when > user space program calls snd_pcm_avail() function. > > By updating runtime->hw_ptr_jiffies each time the HWSYNC is called, > the hw_base will keep the same when buffer stall happens, so does the > hw_ptr. > > Signed-off-by: Brent Lu <brent.lu@xxxxxxxxx> > --- > sound/core/pcm_lib.c | 1 + > 1 file changed, 1 insertion(+) Is this a bugfix needed for older kernels as well? When did this issue show up? thanks, greg k-h
