On 05/20/2014 09:16 PM, Tomasz Figa wrote:
Hi Rickard, On 20.05.2014 21:12, Rickard Strandqvist wrote:Hi Tomasz What I based my patch on is really because of this line: if (substream) snd_pcm_period_elapsed(substream); Boojin Kim thought that this was needed, if this is true anymore..? I have not been able to immerse myself so much in all patches. I'm working on about 100 similar patches.To me having NULL as either data argument of buffer done callback or private_data would be a serious driver bug and IMHO it's better to let it crash with a NULL pointer dereference to let someone notice than mask it by adding a condition. Still, I'm not too experienced with ALSA and ASoC, so I might be wrong. Mark, what do you think about this?
Given that there is a patch[1] which removes the whole file I think we can stop the discussion about this patch here.
But for the record, substream will never ever be NULL in this function. prtd might be though if the DMA completion callback races against the closing of the PCM stream.
[1] http://mailman.alsa-project.org/pipermail/alsa-devel/2014-May/076860.html -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
