2d6e43739c
Link: https://lore.kernel.org/linux-rockchip/20210205114011.10381-1-jbx6244@gmail.com/ Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From: Johan Jonker <jbx6244@gmail.com>
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To: heiko@sntech.de
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Cc: devicetree@vger.kernel.org, balbi@kernel.org,
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gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
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linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org,
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robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org
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Subject: [PATCH v5 2/8] usb: dwc3: of-simple: bail probe if no dwc3 child node
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Date: Tue, 9 Feb 2021 20:23:44 +0100
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Message-ID: <20210209192350.7130-2-jbx6244@gmail.com> (raw)
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In-Reply-To: <20210209192350.7130-1-jbx6244@gmail.com>
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For some of the dwc3-of-simple compatible SoCs we
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don't want to bind this driver to a dwc3 node,
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but bind that node to the 'snps,dwc3' driver instead.
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The kernel has no logic to decide which driver to bind
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to if there are 2 matching drivers, so bail probe if no
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dwc3 child node.
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Signed-off-by: Johan Jonker <jbx6244@gmail.com>
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---
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drivers/usb/dwc3/dwc3-of-simple.c | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/drivers/usb/dwc3/dwc3-of-simple.c
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+++ b/drivers/usb/dwc3/dwc3-of-simple.c
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@@ -38,6 +38,10 @@ static int dwc3_of_simple_probe(struct p
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int ret;
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+ /* Bail probe if no dwc3 child node. */
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+ if (!of_get_compatible_child(dev->of_node, "snps,dwc3"))
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+ return -ENODEV;
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+
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simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL);
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if (!simple)
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return -ENOMEM;
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