From: Luca Ceresoli <luca@lucaceresoli.net>
To: linux-pci@vger.kernel.org
Cc: "Luca Ceresoli" <luca@lucaceresoli.net>,
"Dan Carpenter" <dan.carpenter@oracle.com>,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Kishon Vijay Abraham I" <kishon@ti.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Sekhar Nori" <nsekhar@ti.com>
Subject: [PATCH 1/2] PCI: dra7xx: Fix link removal on probe error
Date: Tue, 14 Dec 2021 23:14:49 +0100 [thread overview]
Message-ID: <20211214221450.589884-1-luca@lucaceresoli.net> (raw)
If a devm_phy_get() calls fails with phy_count==N (N > 0), then N links
have already been added by device_link_add() and won't be deleted by
device_link_del() because the code calls 'return' and not 'goto err_link'.
Fix in a very simple way by doing all the devm_phy_get() calls before all
the device_link_add() calls.
Fixes: 7a4db656a635 ("PCI: dra7xx: Create functional dependency between PCIe and PHY")
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
---
drivers/pci/controller/dwc/pci-dra7xx.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index f7f1490e7beb..2ccc53869e13 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -757,7 +757,9 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)
phy[i] = devm_phy_get(dev, name);
if (IS_ERR(phy[i]))
return PTR_ERR(phy[i]);
+ }
+ for (i = 0; i < phy_count; i++) {
link[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS);
if (!link[i]) {
ret = -EINVAL;
--
2.25.1
next reply other threads:[~2021-12-14 22:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-14 22:14 Luca Ceresoli [this message]
2021-12-14 22:14 ` [PATCH 2/2] PCI: dra7xx: Fix clk disabling in some error paths Luca Ceresoli
2021-12-14 22:42 ` [PATCH 1/2] PCI: dra7xx: Fix link removal on probe error Rob Herring
2021-12-16 9:08 ` Luca Ceresoli
2022-01-11 10:35 ` Luca Ceresoli
2022-01-15 16:02 ` Rob Herring
2022-05-11 16:41 ` Lorenzo Pieralisi
2022-05-12 14:07 ` Luca Ceresoli
2022-05-14 3:46 ` Saravana Kannan
2022-05-17 7:32 ` Luca Ceresoli
2022-05-19 20:25 ` Saravana Kannan
2022-05-23 13:28 ` Luca Ceresoli
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