linux-kernel - Re: [PATCH 1/2] soundwire: add definition for maximum number of ports

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200818083136.GX2639@vkoul-mobl>
Date:   Tue, 18 Aug 2020 14:01:36 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     "Liao, Bard" <bard.liao@...el.com>
Cc:     Bard Liao <yung-chuan.liao@...ux.intel.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tiwai@...e.de" <tiwai@...e.de>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "jank@...ence.com" <jank@...ence.com>,
        "srinivas.kandagatla@...aro.org" <srinivas.kandagatla@...aro.org>,
        "rander.wang@...ux.intel.com" <rander.wang@...ux.intel.com>,
        "ranjani.sridharan@...ux.intel.com" 
        <ranjani.sridharan@...ux.intel.com>,
        "hui.wang@...onical.com" <hui.wang@...onical.com>,
        "pierre-louis.bossart@...ux.intel.com" 
        <pierre-louis.bossart@...ux.intel.com>,
        "Kale, Sanyog R" <sanyog.r.kale@...el.com>,
        "Lin, Mengdong" <mengdong.lin@...el.com>
Subject: Re: [PATCH 1/2] soundwire: add definition for maximum number of ports

On 18-08-20, 06:53, Liao, Bard wrote:
> > -----Original Message-----
> > From: Vinod Koul <vkoul@...nel.org>
> > Sent: Tuesday, August 18, 2020 2:36 PM
> > To: Bard Liao <yung-chuan.liao@...ux.intel.com>
> > Cc: alsa-devel@...a-project.org; linux-kernel@...r.kernel.org; tiwai@...e.de;
> > broonie@...nel.org; gregkh@...uxfoundation.org; jank@...ence.com;
> > srinivas.kandagatla@...aro.org; rander.wang@...ux.intel.com;
> > ranjani.sridharan@...ux.intel.com; hui.wang@...onical.com; pierre-
> > louis.bossart@...ux.intel.com; Kale, Sanyog R <sanyog.r.kale@...el.com>; Lin,
> > Mengdong <mengdong.lin@...el.com>; Liao, Bard <bard.liao@...el.com>
> > Subject: Re: [PATCH 1/2] soundwire: add definition for maximum number of
> > ports
> > 
> > On 18-08-20, 01:47, Bard Liao wrote:
> > > From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> > >
> > > A Device may have at most 15 physical ports (DP0, DP1..DP14).
> > >
> > > Signed-off-by: Pierre-Louis Bossart
> > > <pierre-louis.bossart@...ux.intel.com>
> > > Reviewed-by: Rander Wang <rander.wang@...ux.intel.com>
> > > Reviewed-by: Guennadi Liakhovetski
> > > <guennadi.liakhovetski@...ux.intel.com>
> > > Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
> > > ---
> > >  include/linux/soundwire/sdw.h | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/include/linux/soundwire/sdw.h
> > > b/include/linux/soundwire/sdw.h index 76052f12c9f7..0aa4c6af7554
> > > 100644
> > > --- a/include/linux/soundwire/sdw.h
> > > +++ b/include/linux/soundwire/sdw.h
> > > @@ -38,7 +38,8 @@ struct sdw_slave;
> > >  #define SDW_FRAME_CTRL_BITS		48
> > >  #define SDW_MAX_DEVICES			11
> > >
> > > -#define SDW_VALID_PORT_RANGE(n)		((n) <= 14 && (n) >= 1)
> > > +#define SDW_MAX_PORTS			15
> > > +#define SDW_VALID_PORT_RANGE(n)		((n) <
> > SDW_MAX_PORTS && (n) >= 1)
> > 
> > What is the use of this one if we are allocating all ports always, Also, I dont
> > see it used in second patch?
> 
> It is used in drivers/soundwire/stream.c and drivers/soundwire/debugfs.c.

Ah overlooked that it is modified, pls ignore this comment

-- 
~Vinod