Thread (30 messages) flat view 30 messages, 7 authors, 9h ago

Re: [PATCH v8 07/16] usb: core: Move struct usb_port and related APIs to port.h

From: Alan Stern <stern@rowland.harvard.edu>
Date: 2026-09-04 16:40:24
Also in: driver-core, linux-acpi, linux-arm-kernel, linux-mediatek, linux-pm, linux-usb, lkml

On Fri, Sep 04, 2026 at 04:41:46PM +0800, Chen-Yu Tsai wrote:
|struct usb_port| and its matching container_of() macro should live in
its own port.h, matching the split we have for .c files.

Move them as described. Also move usb_port_is_power_on(), since in the
next change its |struct usb_hub *| parameter will be changed to
|struct usb_port *|, and becomes a non-static function that only
references |struct usb_port|.

port.h is only included from hub.h, as a subsequent patch will directly
use fields from |struct usb_port| in a static inline helper in hub.h.
The USB internal headers don't have header guards to help with this.

Also drop 'extern' from the header declaration of usb_port_is_power_on().
This is not needed in modern C.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <redacted>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
quoted hunk ↗ jump to hunk
diff --git a/drivers/usb/core/port.h b/drivers/usb/core/port.h
new file mode 100644
index 000000000000..00f7500af336
--- /dev/null
+++ b/drivers/usb/core/port.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * usb hub driver head file
+ *
+ * Copyright (C) 1999 Linus Torvalds
+ * Copyright (C) 1999 Johannes Erdfelt
+ * Copyright (C) 1999 Gregory P. Smith
+ * Copyright (C) 2001 Brad Hards (bhards@bigpond.net.au)
+ * Copyright (C) 2012 Intel Corp (tianyu.lan@intel.com)
These copyright notices are entirely inappropriate for this file.  As 
far as I know, none of these people wrote any of the code you moved 
here.

Alan Stern
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