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Date:   Tue, 26 Mar 2019 10:09:11 +0900
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     stable@vger.kernel.org, Vinod Koul <vkoul@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Ravindra Lokhande <rlokhande@nvidia.com>,
        Vinod Koul <vinod.koul@intel.com>,
        Takashi Iwai <tiwai@suse.de>, Mark Brown <broonie@kernel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Joe Perches <joe@perches.com>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: Re: [BACKPORT 4.4.y 02/25] ALSA: compress: add support for 32bit
 calls in a 64bit kernel
Message-ID: <20190326010911.GB29420@kroah.com>
References: <20190322154425.3852517-1-arnd@arndb.de>
 <20190322154425.3852517-3-arnd@arndb.de>
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On Fri, Mar 22, 2019 at 04:43:53PM +0100, Arnd Bergmann wrote:
> From: Ravindra Lokhande <rlokhande@nvidia.com>
> 
> 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@nvidia.com>
> Acked-by: Vinod Koul <vinod.koul@intel.com>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
> (cherry picked from commit c10368897e104c008c610915a218f0fe5fa4ec96)
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  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