http://bugzilla.kernel.org/show_bug.cgi?id=11497 Summary: Polling of IDE CD status can make machine unresponsive Product: IO/Storage Version: 2.5 KernelVersion: 2.6.27-rc5 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: IDE AssignedTo: io_ide@xxxxxxxxxxxxxxxxxxxx ReportedBy: bhutchings@xxxxxxxxxxxxxx Whenever a device handled by ide-cd is opened, the driver polls the device status for up to 5 seconds waiting for a good status value. Since this is done in the open operation, it is holding the BKL all this time. For unknown reasons (possibly another driver bug) the DVD-ROM drives in some machines here can get into a state where they always return status 0xd0 and ide-cd always polls for the full 5 seconds. hal-storage-daemon appears to open CD-ROM devices every 5 seconds, with the result that in this state all other operations requiring the BKL can only run at 5 second intervals. This is possibly bad behaviour on HAL's part, but the driver also seems to be at fault in holding the BKL for so long. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
