From: Johan Jonker <jbx6244@gmail.com>
To: heiko@sntech.de
Cc: robh+dt@kernel.org, gregkh@linuxfoundation.org, balbi@kernel.org,
linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
linux-rockchip@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v5 2/8] usb: dwc3: of-simple: bail probe if no dwc3 child node
Date: Tue, 9 Feb 2021 20:23:44 +0100 [thread overview]
Message-ID: <20210209192350.7130-2-jbx6244@gmail.com> (raw)
In-Reply-To: <20210209192350.7130-1-jbx6244@gmail.com>
For some of the dwc3-of-simple compatible SoCs we
don't want to bind this driver to a dwc3 node,
but bind that node to the 'snps,dwc3' driver instead.
The kernel has no logic to decide which driver to bind
to if there are 2 matching drivers, so bail probe if no
dwc3 child node.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
---
drivers/usb/dwc3/dwc3-of-simple.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index e62ecd22b..347b4d384 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -38,6 +38,10 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
int ret;
+ /* Bail probe if no dwc3 child node. */
+ if (!of_get_compatible_child(dev->of_node, "snps,dwc3"))
+ return -ENODEV;
+
simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL);
if (!simple)
return -ENOMEM;
--
2.11.0
next prev parent reply other threads:[~2021-02-09 19:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-09 19:23 [PATCH v5 1/8] dt-bindings: usb: convert rockchip,dwc3.txt to yaml Johan Jonker
2021-02-09 19:23 ` Johan Jonker [this message]
2021-03-24 16:41 ` [PATCH v5 2/8] usb: dwc3: of-simple: bail probe if no dwc3 child node Heiko Stübner
2021-03-24 17:21 ` Johan Jonker
2021-02-09 19:23 ` [PATCH v5 3/8] arm64: dts: rockchip: optimize clks for rk3399 dwc3 Johan Jonker
2021-02-09 19:23 ` [PATCH v5 4/8] arm64: dts: rockchip: restyle rk3399 usbdrd3_0 node Johan Jonker
2021-02-09 19:23 ` [PATCH v5 5/8] arm64: dts: rockchip: restyle rk3399 usbdrd3_1 node Johan Jonker
2021-02-09 19:23 ` [PATCH v5 6/8] dt-bindings: usb: dwc3: add description for rk3328 Johan Jonker
2021-02-10 18:43 ` Rob Herring
2021-02-09 19:23 ` [PATCH v5 7/8] arm64: dts: rockchip: add rk3328 dwc3 usb controller node Johan Jonker
2021-02-09 19:23 ` [PATCH v5 8/8] dts64: rockchip: enable dwc3 usb for A95X Z2 Johan Jonker
2021-02-10 18:43 ` [PATCH v5 1/8] dt-bindings: usb: convert rockchip,dwc3.txt to yaml Rob Herring
2021-03-25 0:50 ` (subset) " Heiko Stuebner
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