USB core: Use const where possible.
This patch marks some USB core's functions parameters as const. This
improves the design (we're saying to the caller that its parameter is
not going to be modified) and may help in compiler's optimisation work.
Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 6096ead..67da6d0 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -53,7 +53,7 @@
* no such thing as a platform USB device, so we can steal the use
* of the platform_data field. */
-static inline int is_usb_device(struct device *dev)
+static inline int is_usb_device(const struct device *dev)
{
return dev->platform_data == &usb_generic_driver;
}
@@ -78,7 +78,7 @@
f->is_active = 0;
}
-static inline int is_active(struct usb_interface *f)
+static inline int is_active(const struct usb_interface *f)
{
return f->is_active;
}