From: Stefan Richter <[EMAIL PROTECTED]> Since my commit 8252bbb1363b7fe963a3eb6f8a36da619a6f5a65 in 2.6.20-rc1, host devices have a dummy driver attached. Alas the driver was not registered before use if ieee1394 was loaded with disable_nodemgr=1.
This resulted in non-functional FireWire drivers or kernel lockup. http://bugzilla.kernel.org/show_bug.cgi?id=7942 Signed-off-by: Stefan Richter <[EMAIL PROTECTED]> Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]> --- drivers/ieee1394/nodemgr.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) --- linux-2.6.20.1.orig/drivers/ieee1394/nodemgr.c +++ linux-2.6.20.1/drivers/ieee1394/nodemgr.c @@ -274,7 +274,6 @@ static struct device_driver nodemgr_mid_ struct device nodemgr_dev_template_host = { .bus = &ieee1394_bus_type, .release = nodemgr_release_host, - .driver = &nodemgr_mid_layer_driver, }; @@ -1889,22 +1888,31 @@ int init_ieee1394_nodemgr(void) error = class_register(&nodemgr_ne_class); if (error) - return error; - + goto fail_ne; error = class_register(&nodemgr_ud_class); - if (error) { - class_unregister(&nodemgr_ne_class); - return error; - } + if (error) + goto fail_ud; error = driver_register(&nodemgr_mid_layer_driver); + if (error) + goto fail_ml; + /* This driver is not used if nodemgr is off (disable_nodemgr=1). */ + nodemgr_dev_template_host.driver = &nodemgr_mid_layer_driver; + hpsb_register_highlevel(&nodemgr_highlevel); return 0; + +fail_ml: + class_unregister(&nodemgr_ud_class); +fail_ud: + class_unregister(&nodemgr_ne_class); +fail_ne: + return error; } void cleanup_ieee1394_nodemgr(void) { hpsb_unregister_highlevel(&nodemgr_highlevel); - + driver_unregister(&nodemgr_mid_layer_driver); class_unregister(&nodemgr_ud_class); class_unregister(&nodemgr_ne_class); } -- - 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/
