Prevent dynamic SPI device addition below a controller which is
being removed. To do so, set the controller's "dead" flag using
kill_device() (patch [3/3]).
Serialize access to a device's "dead" flag with a newly introduced
rw_semaphore in lieu of the device_lock to avoid deadlocks occurring
with the new use case (patch [2/3]).
Add a missing check for the "dead" flag upon driver binding
(patch [1/3]).
Lukas Wunner (3):
driver core: Avoid binding drivers to dead devices
driver core: Use rwsem for kill_device() serialization
driver core: Avoid adding children below a dead parent
drivers/base/base.h | 2 ++
drivers/base/core.c | 47 ++++++++++++++++++++++++++++++++------------
drivers/base/dd.c | 12 ++++++++++-
drivers/nvdimm/bus.c | 8 +-------
drivers/spi/spi.c | 3 +++
5 files changed, 51 insertions(+), 21 deletions(-)
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2.27.0