Re: [BACKPORT 4.4.y 02/25] ALSA: compress: add support for 32bit calls in a 64bit kernel

[Greg KH]

On Fri, Mar 22, 2019 at 04:43:53PM +0100, Arnd Bergmann wrote:
> From: Ravindra Lokhande <rlokhande@xxxxxxxxxx>
> 
> Compress offload does not support ioctl calls from a 32bit userspace
> in a 64 bit kernel. This patch adds support for ioctls from a 32bit
> userspace in a 64bit kernel
> 
> Signed-off-by: Ravindra Lokhande <rlokhande@xxxxxxxxxx>
> Acked-by: Vinod Koul <vinod.koul@xxxxxxxxx>
> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
> (cherry picked from commit c10368897e104c008c610915a218f0fe5fa4ec96)
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  sound/core/compress_offload.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)

How is this not a "new feature"?  What bug does this fix?  Has this ever
worked in the past?

thanks,

greg k-h