On 18.11.2015 00:55, Arnd Bergmann wrote: > As we are now passing the filter data as pointers to the drivers, > we can take the final step and also pass the filter function the > same way. I'm keeping this change separate, as there it's less > obvious that this is a net win. > > Upsides of this are: > > - The ASoC drivers are completely independent from the DMA engine > implementation, which simplifies the Kconfig logic and in theory > allows the same sound drivers to be built in a kernel that supports > different kinds of dmaengine drivers. > > - Consistency with other subsystems and drivers > > On the other hand, we have a few downsides: > > - The s3c24xx-dma driver now needs to be built-in for the ac97 platform > device to be instantiated on s3c2440. > > - samsung_dmaengine_pcm_config cannot be marked 'const' any more > because the filter function pointer needs to be set at runtime. > This is safe as long we don't have multiple different DMA engines > in thet same system at runtime, but is nonetheless ugly. > > Signed-off-by: Arnd Bergmann <a...@arndb.de> > --- > v2: avoid possibly NULL pdata >
Looks good. I also tested entire patchset on Exynos4412/Trats2 board (custom kernel with audio working) for regressions and it worked fine. However, since this was not a S3C24xx/S3C64xx board, I don't find that testing sufficient for a tag. So only: Reviewed-by: Krzysztof Kozlowski <k.kozlow...@samsung.com> Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
