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Message-Id: <20180516160816.20251-1-flo@geekplace.eu>
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
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