From: Ian Abbott Date: Fri, 30 Mar 2012 16:14:58 +0000 (+0100) Subject: staging: comedi: don't hijack hardware device private data X-Git-Tag: v3.5-rc1~145^2~229^2~225 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c43435d7722134ed1fda58ce1025f41029bd58ad;p=pandora-kernel.git staging: comedi: don't hijack hardware device private data comedi_auto_config() associates a Comedi minor device number with an auto-configured hardware device and comedi_auto_unconfig() disassociates it. Currently, these use the hardware device's private data pointer to point to some allocated storage holding the minor device number. This is a bit of a waste of the hardware device's private data pointer, preventing it from being used for something more useful by the low-level comedi device drivers. For example, it would make more sense if comedi_usb_auto_config() was passed a pointer to the struct usb_interface instead of the struct usb_device, but this cannot be done currently because the low-level comedi drivers already use the private data pointer in the struct usb_interface for something more useful. This patch stops the comedi core hijacking the hardware device's private data pointer. Instead, comedi_auto_config() stores a pointer to the hardware device's struct device in the struct comedi_device_file_info associated with the minor device number, and comedi_auto_unconfig() calls new function comedi_find_board_minor() to recover the minor device number associated with the hardware device. Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed