linux-kernel - [PATCH 10/17] ABI: sysfs-bus-pci: add a alternative What fields

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Date:   Mon, 27 Sep 2021 15:59:43 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "Jonathan Corbet" <corbet@....net>,
        Amey Narkhede <ameynarkhede03@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Carlos Bilbao <bilbao@...edu>,
        Leon Romanovsky <leon@...nel.org>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        Oded Gabbay <oded.gabbay@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 10/17] ABI: sysfs-bus-pci: add a alternative What fields

There are some PCI ABI that aren't shown under:

	/sys/bus/pci/drivers/.../

Because they're registered with a different class. That's
the case of, for instance:

	/sys/bus/i2c/drivers/CHT Whiskey Cove PMIC/unbind

This one is not present under /sys/bus/pci:

	$ find /sys/bus/pci -name 'CHT Whiskey Cove PMIC'

Although clearly this is provided by a PCI driver:

	/sys/devices/pci0000:00/0000:00:02.0/i2c-4/subsystem/drivers/CHT Whiskey Cove PMIC/unbind

So, add an altertate What location in order to match bind/unbind
to such devices.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---

See [PATCH 00/17] at: https://lore.kernel.org/all/cover.1632750608.git.mchehab+huawei@kernel.org/

 Documentation/ABI/testing/sysfs-bus-pci | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 1eeac7f59672..16afe3f59cbd 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -1,4 +1,5 @@
 What:		/sys/bus/pci/drivers/.../bind
+What:		/sys/devices/pciX/.../bind
 Date:		December 2003
 Contact:	linux-pci@...r.kernel.org
 Description:
@@ -14,6 +15,7 @@ Description:
 		(Note: kernels before 2.6.28 may require echo -n).
 
 What:		/sys/bus/pci/drivers/.../unbind
+What:		/sys/devices/pciX/.../unbind
 Date:		December 2003
 Contact:	linux-pci@...r.kernel.org
 Description:
@@ -29,6 +31,7 @@ Description:
 		(Note: kernels before 2.6.28 may require echo -n).
 
 What:		/sys/bus/pci/drivers/.../new_id
+What:		/sys/devices/pciX/.../new_id
 Date:		December 2003
 Contact:	linux-pci@...r.kernel.org
 Description:
@@ -47,6 +50,7 @@ Description:
 		  # echo "8086 10f5" > /sys/bus/pci/drivers/foo/new_id
 
 What:		/sys/bus/pci/drivers/.../remove_id
+What:		/sys/devices/pciX/.../remove_id
 Date:		February 2009
 Contact:	Chris Wright <chrisw@...s-sol.org>
 Description:
-- 
2.31.1