To decrease the chances of devices deferring their probes because of dependencies not having probed yet because of their drivers not having registered yet, delay all probing until the late initcall level.
This will allow us to avoid deferred probes completely later by probing dependencies on demand, or by probing them in dependency order. Signed-off-by: Tomeu Vizoso <[email protected]> --- drivers/base/dd.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/base/dd.c b/drivers/base/dd.c index a638bbb..18438aa 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -407,6 +407,12 @@ int driver_probe_device(struct device_driver *drv, struct device *dev) if (!device_is_registered(dev)) return -ENODEV; + /* Defer all probes until we start processing the queue */ + if (!driver_deferred_probe_enable) { + driver_deferred_probe_add(dev); + return 0; + } + pr_debug("bus: '%s': %s: matched device %s with driver %s\n", drv->bus->name, __func__, dev_name(dev), drv->name); @@ -585,7 +591,7 @@ EXPORT_SYMBOL_GPL(device_attach); void device_initial_probe(struct device *dev) { - __device_attach(dev, true); + __device_attach(dev, driver_deferred_probe_enable); } static int __driver_attach(struct device *dev, void *data) -- 2.4.1 -- 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/
