linux-kernel - [PATCH v3] PCI: mt7621: Add sentinel to quirks table

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Message-Id: <20221205204645.301301-1-git@johnthomson.fastmail.com.au>
Date:   Tue,  6 Dec 2022 06:46:45 +1000
From:   John Thomson <git@...nthomson.fastmail.com.au>
To:     Sergio Paracuellos <sergio.paracuellos@...il.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        John Thomson <git@...nthomson.fastmail.com.au>
Subject: [PATCH v3] PCI: mt7621: Add sentinel to quirks table

This driver was missing a sentinel in the struct soc_device_attribute
array, which caused an oops when assessed by
soc_device_match(mt7621_pcie_quirks_match)
This was only exposed once the CONFIG_SOC_MT7621 mt7621 soc_dev_attr
was fixed to register the soc as a device, in commit 7c18b64bba3b ("mips:
ralink: mt7621: do not use kzalloc too early")

This quirk test was introduced in the staging driver in
commit b483b4e4d3f6 ("staging: mt7621-pci: add quirks for 'E2' revision
using 'soc_device_attribute'"), and the staging driver was moved in
commit 2bdd5238e756 ("PCI: mt7621: Add MediaTek MT7621 PCIe host
controller driver") for the 5.16 kernel

Link: https://lore.kernel.org/lkml/26ebbed1-0fe9-4af9-8466-65f841d0b382@app.fastmail.com
Fixes: b483b4e4d3f6 ("staging: mt7621-pci: add quirks for 'E2' revision using 'soc_device_attribute'")
Signed-off-by: John Thomson <git@...nthomson.fastmail.com.au>
Acked-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
---
v2: no newline in middle of Fixes tag
v3: commit message changes
---
 drivers/pci/controller/pcie-mt7621.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c
index 4bd1abf26008..ee7aad09d627 100644
--- a/drivers/pci/controller/pcie-mt7621.c
+++ b/drivers/pci/controller/pcie-mt7621.c
@@ -466,7 +466,8 @@ static int mt7621_pcie_register_host(struct pci_host_bridge *host)
 }
 
 static const struct soc_device_attribute mt7621_pcie_quirks_match[] = {
-	{ .soc_id = "mt7621", .revision = "E2" }
+	{ .soc_id = "mt7621", .revision = "E2" },
+	{ /* sentinel */ }
 };
 
 static int mt7621_pcie_probe(struct platform_device *pdev)
-- 
2.38.1