linux-kernel - Re: [PATCH 0/3] ALSA: qc_audio_offload: address space cleanups

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Message-ID: <8734d7va5t.wl-tiwai@suse.de>
Date: Wed, 14 May 2025 11:01:02 +0200
From: Takashi Iwai <tiwai@...e.de>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Mark Brown <broonie@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Wesley Cheng <quic_wcheng@...cinc.com>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] ALSA: qc_audio_offload: address space cleanups

On Tue, 13 May 2025 14:34:39 +0200,
Arnd Bergmann wrote:
> 
> From: Arnd Bergmann <arnd@...db.de>
> 
> I ran into a build time warning and spent some time trying to
> gently rewrite the new driver to avoid the warning and make it
> behave more like other drivers.
> 
> I'm still a bit confused about what the driver actually does
> and why a buffer has to be mapped into a two devices, but I hope
> that either my patches clear this up enough, or if they are wrong
> are helpful to have someone else sort it out properly.
> 
> The patches are currently queued for v6.16 in Greg's usb-next
> tree, so my fixes look correct, I hope he can apply them there
> before the merge window.
> 
> Arnd Bergmann (3):
>   ALSA: qc_audio_offload: rename dma/iova/va/cpu/phys variables
>   ALSA: qc_audio_offload: avoid leaking xfer_buf allocation
>   ALSA: qc_audio_offload: try to reduce address space confusion

JFYI, the qcom offload stuff is currently only on Greg's USB tree, not
on Mark's or my sound git tree.


Takashi

> 
>  sound/usb/qcom/qc_audio_offload.c  | 158 ++++++++++++++++-------------
>  sound/usb/qcom/usb_audio_qmi_v01.c |   4 +-
>  sound/usb/qcom/usb_audio_qmi_v01.h |   4 +-
>  3 files changed, 89 insertions(+), 77 deletions(-)
> 
> 
> Cc: Jaroslav Kysela <perex@...ex.cz>
> Cc: Takashi Iwai <tiwai@...e.com>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Mark Brown <broonie@...nel.org>
> Cc: Wesley Cheng <quic_wcheng@...cinc.com>
> Cc: Dan Carpenter <dan.carpenter@...aro.org>
> Cc: linux-sound@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> 
> 
> -- 
> 2.39.5
> 
>