Date: Fri, 6 Nov 2009 20:23:16 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r199000 - stable/8/sys/kern Message-ID: <200911062023.nA6KNGfE027615@svn.freebsd.org>
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Author: jhb Date: Fri Nov 6 20:23:16 2009 New Revision: 199000 URL: http://svn.freebsd.org/changeset/base/199000 Log: MFC 198367: Set the devclass_t pointer specified in the DRIVER_MODULE() macro sooner so it is always valid when a driver's identify routine is called. Modified: stable/8/sys/kern/subr_bus.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/kern/subr_bus.c ============================================================================== --- stable/8/sys/kern/subr_bus.c Fri Nov 6 20:07:16 2009 (r198999) +++ stable/8/sys/kern/subr_bus.c Fri Nov 6 20:23:16 2009 (r199000) @@ -1049,9 +1049,10 @@ devclass_driver_added(devclass_t dc, dri * @param driver the driver to register */ static int -devclass_add_driver(devclass_t dc, driver_t *driver, int pass) +devclass_add_driver(devclass_t dc, driver_t *driver, int pass, devclass_t *dcp) { driverlink_t dl; + const char *parentname; PDEBUG(("%s", DRIVERNAME(driver))); @@ -1072,9 +1073,17 @@ devclass_add_driver(devclass_t dc, drive kobj_class_compile((kobj_class_t) driver); /* - * Make sure the devclass which the driver is implementing exists. + * If the driver has any base classes, make the + * devclass inherit from the devclass of the driver's + * first base class. This will allow the system to + * search for drivers in both devclasses for children + * of a device using this driver. */ - devclass_find_internal(driver->name, NULL, TRUE); + if (driver->baseclasses) + parentname = driver->baseclasses[0]->name; + else + parentname = NULL; + *dcp = devclass_find_internal(driver->name, parentname, TRUE); dl->driver = driver; TAILQ_INSERT_TAIL(&dc->drivers, dl, link); @@ -4117,27 +4126,8 @@ driver_module_handler(module_t mod, int driver = dmd->dmd_driver; PDEBUG(("Loading module: driver %s on bus %s (pass %d)", DRIVERNAME(driver), dmd->dmd_busname, pass)); - error = devclass_add_driver(bus_devclass, driver, pass); - if (error) - break; - - /* - * If the driver has any base classes, make the - * devclass inherit from the devclass of the driver's - * first base class. This will allow the system to - * search for drivers in both devclasses for children - * of a device using this driver. - */ - if (driver->baseclasses) { - const char *parentname; - parentname = driver->baseclasses[0]->name; - *dmd->dmd_devclass = - devclass_find_internal(driver->name, - parentname, TRUE); - } else { - *dmd->dmd_devclass = - devclass_find_internal(driver->name, NULL, TRUE); - } + error = devclass_add_driver(bus_devclass, driver, pass, + dmd->dmd_devclass); break; case MOD_UNLOAD:
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