Hello all! I have been implementing some code to drive a USB device in user space using the usbdevfs. It appears as though basic communication is working, but I'm puzzled by one thing (which, unfortunately, is probably a stupid question):
Why, in usbdevice_fs.h are IOCTL's like "Set interface" declared using the _IOR macro when they are really used to *write* data to the device, not *read* from it. Similarly, all the "Get XXX" functions are declared using the _IOW macro when they *read* from the device instead of *write* to it. In this case, the code I have is working, I'm just trying to understand why the IOCTL macro declarations seem to be reversed. Thanks in advance, Victor Ditoro Sundoro Software, LLC Voice (205) 982-8232 [EMAIL PROTECTED] _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
