On Wed, 10 Jun 2009, Rory Filer wrote: > Hi > > We are working on a feature that requires the driver to somehow indicate a status to an application in user-mode. We were thinking of using a module parameter and sysfs as follows: > > - driver updates the module parameter with the status (boolean is fine), so it is writing the status > > - There is no need for the application to receive notifications in an interrupt-like manner so periodically scanning the module parameter via file reads in sysfs will work fine. User mode application is read-only for the module parameter. > > My question, is this a "proper" use of a module parameter or is there another preferred method for accomplishing this feat? You should ask first if this is a "possible" use. What happens if your driver is bound to more than one device? You can use a regular sysfs attribute file instead of a module parameter. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
