This patch series makes driver_register() emit an error message and return a failure code instead of triggering a BUG_ON().
The first patch will now print out the name of the faulty driver *and* the name of the involved bus. The second patch records the error code if bus_register() fails. The third and final patch of the series extends the first patch so that the recorded error code is also print out if non-zero. Otherwhise, if drv->bus->p is NULL but the error code is zero, then probably bus_register() was never called before. Florian Schmaus (3): driver-core: return EINVAL error instead of BUG_ON() driver-core: record error on bus registration driver-core: print bus registration error value drivers/base/bus.c | 2 ++ drivers/base/driver.c | 14 +++++++++++++- include/linux/device.h | 1 + 3 files changed, 16 insertions(+), 1 deletion(-) -- 2.16.1
