Serge Belyshev wrote: > Andreas Jellinghaus <[EMAIL PROTECTED]> writes: > >> with plain 2.6.20.2 I get events / called from udev for /proc/bus/usb >> devices. with rsdl 0.30 added to the kernel I no longer get called for >> those devices (but I do get called for the new /dev/usbdev devices - >> except that I can't use them). >> >> any idea why and what to do? might be related to a race condition. > > sounds like http://bugzilla.kernel.org/show_bug.cgi?id=8166#c32
further debugging shows at least udev->openct is missing an event: udev events on 2.6.20.2 (without rsdl): ( "$ACTION - $DEVICE - $DEVNAME - $PRODUCT - $$ - $PPID") add - /proc/bus/usb/002/016 - - 8e6/3438/100 - 6071 - 6065 add - - /dev/usbdev2.16_ep02 - - 6116 - 6113 add - - /dev/usbdev2.16_ep82 - - 6118 - 6114 add - - /dev/usbdev2.16_ep81 - - 6120 - 6115 udev events on 2.6.20.2 (with rsdl): ( "$ACTION - $DEVICE - $DEVNAME - $PRODUCT - $$ - $PPID") add - - /dev/usbdev2.8_ep02 - - 5287 - 5286 add - - /dev/usbdev2.8_ep82 - - 5290 - 5288 add - - /dev/usbdev2.8_ep81 - - 5291 - 5289 the /proc event is missing. in both cases /proc/ was mounted. syslog with udev on debugging (only the /proc event from the kernel w/o rsdl): Mar 15 11:19:06 localhost udevd[2622]: udev_event_run: seq 2869 forked, pid [6065], 'add' 'usb', 0 seconds old Mar 15 11:19:06 localhost udevd-event[6065]: wait_for_sysfs: file '/sys/devices/pci0000:00/0000:00:1d.1/usb2/2-1/2-1.5/2-1.5:1.0/bus' appeared after 0 loops Mar 15 11:19:06 localhost udevd-event[6065]: run_program: '/lib/udev/openct_usb' Mar 15 11:19:07 localhost udevd-event[6065]: run_program: '/lib/udev/openct_usb' returned with status 0 Mar 15 11:19:07 localhost udevd-event[6065]: pass_env_to_socket: passed 338 bytes to socket '/org/freedesktop/hal/udev_event', Mar 15 11:19:07 localhost udevd-event[6065]: run_program: '/sbin/modprobe -Q usb:v08E6p3438d0100dc00dsc00dp00ic0Bisc00ip00' Mar 15 11:19:07 localhost udevd-event[6065]: run_program: '/sbin/modprobe' returned with status 1 Mar 15 11:19:07 localhost udevd-event[6065]: pass_env_to_socket: passed -1 bytes to socket '/org/kernel/udev/monitor', Mar 15 11:19:07 localhost udevd-event[6065]: udev_event_run: seq 2869 finished Mar 15 11:19:07 localhost udevd[2622]: udev_done: seq 2869, pid [6065] exit with 1, 1 seconds old there is something similar in syslog (on the rsdl kernel): Mar 15 11:24:32 localhost udevd[2607]: udev_event_run: seq 2717 forked, pid [5284], 'add' 'usb', 0 seconds old Mar 15 11:24:32 localhost udevd-event[5284]: wait_for_sysfs: file '/sys/devices/pci0000:00/0000:00:1d.1/usb2/2-1/2-1.5/2-1.5:1.0/bus' appeared after 0 loops Mar 15 11:24:32 localhost udevd-event[5284]: pass_env_to_socket: passed 338 bytes to socket '/org/freedesktop/hal/udev_event', Mar 15 11:24:32 localhost udevd-event[5284]: run_program: '/sbin/modprobe -Q usb:v08E6p3438d0100dc00dsc00dp00ic0Bisc00ip00' Mar 15 11:24:32 localhost udevd-event[5284]: run_program: '/sbin/modprobe' returned with status 1 Mar 15 11:24:32 localhost udevd-event[5284]: pass_env_to_socket: passed -1 bytes to socket '/org/kernel/udev/monitor', Mar 15 11:24:32 localhost udevd-event[5284]: udev_event_run: seq 2717 finished Mar 15 11:24:32 localhost udevd[2607]: udev_done: seq 2717, pid [5284] exit with 1, 0 seconds old so I guess it might be a udev bug, as it wait_for_sysfs in both cases, but doesn't trigger openct if the kernel has rsdl. as the hardware is the same and the openct rules for udev didn't change. Thanks, I'm taking the issue to the hotplug mailing list. Regards, Andreas - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
