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USB: avoid using urb->pipe in usbcore

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This patch (as946) eliminates many of the uses of urb->pipe in
usbcore.  Unfortunately there will have to be a significant API
change, affecting all USB drivers, before we can remove it entirely.
This patch contents itself with changing only the interface to
usb_buffer_map_sg() and friends: The pipe argument is replaced with a
direction flag.  That can be done easily because those routines get
used in only one place.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2007-07-30 17:07:21 -04:00 • committed by Greg Kroah-Hartman
parent fea3409112
commit 5e60a16139
4 changed files with 44 additions and 35 deletions
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6
include/linux/usb.h
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@ -1422,13 +1422,13 @@ void usb_buffer_unmap (struct urb *urb);
#endif
struct scatterlist;
int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe,
int usb_buffer_map_sg(const struct usb_device *dev, int is_in,
struct scatterlist *sg, int nents);
#if 0
void usb_buffer_dmasync_sg(const struct usb_device *dev, unsigned pipe,
void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in,
struct scatterlist *sg, int n_hw_ents);
#endif
void usb_buffer_unmap_sg(const struct usb_device *dev, unsigned pipe,
void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
struct scatterlist *sg, int n_hw_ents);
/*-------------------------------------------------------------------*