10b1b4ee12
Read calls may be repeated by VFS if the user destination memory is not mapped in. Devman currently assumes that all reads are successful, and uses this to track whether EOF has been reached for a particular event, discarding it as soon as this happens. Upon repetition, this may result in lost events for devmand. With this patch, devman discards events only once devmand reads the EOF marker, which itself can never generate a user page fault. The result is that read calls for data can be repeated safely, without the risk of losing events in the process. Change-Id: I9dfdf7f8c8992a20a10302d79c3506e61f8564b0