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authorMatthew Wilcox <willy@linux.intel.com>2010-04-30 23:11:29 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-21 00:21:41 +0400
commitfe54b058de9d1df5fef9e2a559651f4b7c9f04b1 (patch)
tree9ed1f427416478e8832f5ca67c17bd8433a87630 /include
parentb18a23495fd4492081a61373fc3ef9f5c59e094a (diff)
downloadlinux-fe54b058de9d1df5fef9e2a559651f4b7c9f04b1.tar.xz
USB: Add a usb_pipe_endpoint() convenience function
Converting a pipe number to a struct usb_host_endpoint pointer is a little messy. Introduce a new convenience function to hide the mess. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/usb.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 1eb4762d9ea8..fd7d61e58198 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1552,6 +1552,14 @@ static inline unsigned int __create_pipe(struct usb_device *dev,
#define usb_rcvintpipe(dev,endpoint) \
((PIPE_INTERRUPT << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
+static inline struct usb_host_endpoint *
+usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
+{
+ struct usb_host_endpoint **eps;
+ eps = usb_pipein(pipe) ? dev->ep_in : dev->ep_out;
+ return eps[usb_pipeendpoint(pipe)];
+}
+
/*-------------------------------------------------------------------------*/
static inline __u16