linux-kernel - [PATCH v5 0/3] return EINVAL error instead of BUG

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Date:   Wed, 16 May 2018 18:08:13 +0200
From:   Florian Schmaus <flo@...kplace.eu>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Florian Schmaus <flo@...kplace.eu>, linux-kernel@...r.kernel.org
Subject: [PATCH v5 0/3] return EINVAL error instead of BUG_ON()

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 cause driver_register() to fail gracefully if the
driver's bus was not initialized while printing 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     |  6 +++++-
 drivers/base/driver.c  | 12 +++++++++++-
 include/linux/device.h |  1 +
 3 files changed, 17 insertions(+), 2 deletions(-)

-- 
2.16.1