From: Mans Rullgard <mans@mansr.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] usb: core: skip interfaces disabled in devicetree
Date: Sat, 16 Feb 2019 17:04:52 +0000 [thread overview]
Message-ID: <20190216170452.10884-1-mans@mansr.com> (raw)
If an interface has an associated devicetree node with status disabled,
do not register the device. This is useful for boards with a built-in
multifunction USB device where some functions are broken or otherwise
undesired.
Signed-off-by: Mans Rullgard <mans@mansr.com>
---
drivers/usb/core/message.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index bfa5eda0cc26..6b45d4835e41 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -2007,6 +2007,10 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
for (i = 0; i < nintf; ++i) {
struct usb_interface *intf = cp->interface[i];
+ if (intf->dev.of_node &&
+ !of_device_is_available(intf->dev.of_node))
+ continue;
+
dev_dbg(&dev->dev,
"adding %s (config #%d, interface %d)\n",
dev_name(&intf->dev), configuration,
--
2.20.1
next reply other threads:[~2019-02-16 17:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-16 17:04 Mans Rullgard [this message]
2019-02-19 13:11 ` [PATCH] usb: core: skip interfaces disabled in devicetree Greg Kroah-Hartman
2019-02-19 13:24 ` Måns Rullgård
2019-02-19 13:42 ` Greg Kroah-Hartman
2019-02-19 14:52 ` [PATCH v2] " Mans Rullgard
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