ARM: 9480/1: entry: expand comment in __switch_tografted

As per discussion between the developers in the mail thread
linked, expand the comment in __switch_to so that readers
of the code understand what is going on.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

1 files changed, 9 insertions, 0 deletions

diff --git a/rust/helpers/usb.c b/rust/helpers/usb.c
new file mode 100644
index 000000000..eff1cf7be
--- /dev/null
+++ b/rust/helpers/usb.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/usb.h>
+
+__rust_helper struct usb_device *
+rust_helper_interface_to_usbdev(struct usb_interface *intf)
+{
+	return interface_to_usbdev(intf);
+}