Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Sun, 12 Aug 2018 11:28:37 +0200
From:   Martin Mares <mj@ucw.cz>
To:     Matthew Wilcox <willy@infradead.org>
Cc:     Logan Gunthorpe <logang@deltatee.com>,
        linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
        linux-doc@vger.kernel.org, Stephen Bates <sbates@raithlin.com>,
        Christoph Hellwig <hch@lst.de>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Ingo Molnar <mingo@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Marc Zyngier <marc.zyngier@arm.com>,
        Kai-Heng Feng <kai.heng.feng@canonical.com>,
        Frederic Weisbecker <frederic@kernel.org>,
        Dan Williams <dan.j.williams@intel.com>,
        =?utf-8?B?SsOpcsO0bWU=?= Glisse <jglisse@redhat.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Alex Williamson <alex.williamson@redhat.com>,
        Christian =?utf-8?B?S8O2bmln?= <christian.koenig@amd.com>
Subject: Re: lspci: Display path to device
Message-ID: <mj+md-20180812.092635.39872.nikam@ucw.cz>
References: <20180717170204.30470-1-logang@deltatee.com>
 <20180717203900.GA1771@bombadil.infradead.org>
 <mj+md-20180810.091549.51451.nikam@ucw.cz>
 <mj+md-20180810.103017.64385.nikam@ucw.cz>
 <20180810145655.GA16533@bombadil.infradead.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20180810145655.GA16533@bombadil.infradead.org>
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hello!

> One is that using -P and -s together doesn't work because we haven't
> scanned the entire topology.
> 
> $ ./lspci-mw -PF tests/fujitsu-p8010.lspci -s 1d:00.0
> 00:1e.0/03.0/00.0 Network controller: 3Com Corporation 3com 3CRWE154G72 [Office Connect Wireless LAN Adapter] (rev 01)
> $ ./lspci-mm -PF tests/fujitsu-p8010.lspci -s 1d:00.0
> 1d:00.0 Network controller: 3Com Corporation 3com 3CRWE154G72 [Office Connect Wireless LAN Adapter] (rev 01)

Fixed. When topology is required, we now scan all devices and apply the
filters later.

> The other is that even when not using -s, the topology isn't fully represented:
> 
> $ ./lspci-mm -PF tests/fujitsu-p8010.lspci |grep 3com
> 00:1e.0/00.0 Network controller: 3Com Corporation 3com 3CRWE154G72 [Office Connect Wireless LAN Adapter] (rev 01)

Ah well, it seems that the tree mode never worked with CardBus bridges. Fixed.

After some pondering, I changed the format of the paths to include bus numbers
in all steps. I think it is more intuitive.

Please give it a try. If it works, I will merge the branch to master.

					Martin