Hi Roger, On Wednesday 03 March 2010 10:02:16 Roger Quadros wrote: > Hi, > > What is the best mechanism to signal an event from gadget driver to user > space? > > 1) Use POLLPRI when we get the event. User space can then issue an IOCTL to > get the event. > 2) Use uevent to send the event to user space > 3) Use a separate device file dedicated for the events > > Which of the 3 is a good approach. Is there a better way than these > supported by Linux? I guess the answer depends on the use case. For V4L2, Sakari Ailus recently posted patches to add an events API based on POLLPRI/ioctls. You can find them on the linux-media mailing list. -- Regards, Laurent Pinchart -- 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
