linux/drivers/staging/fieldbus
Greg Kroah-Hartman d69d804845 driver core: have match() callback in struct bus_type take a const *
In the match() callback, the struct device_driver * should not be
changed, so change the function callback to be a const *.  This is one
step of many towards making the driver core safe to have struct
device_driver in read-only memory.

Because the match() callback is in all busses, all busses are modified
to handle this properly.  This does entail switching some container_of()
calls to container_of_const() to properly handle the constant *.

For some busses, like PCI and USB and HV, the const * is cast away in
the match callback as those busses do want to modify those structures at
this point in time (they have a local lock in the driver structure.)
That will have to be changed in the future if they wish to have their
struct device * in read-only-memory.

Cc: Rafael J. Wysocki <rafael@kernel.org>
Reviewed-by: Alex Elder <elder@kernel.org>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-07-03 15:16:54 +02:00
..
anybuss driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
Documentation dt-bindings: bus: imx-weim: convert to YAML 2024-02-26 08:25:59 +01:00
dev_core.c staging: fieldbus: make fieldbus_class constant 2024-03-05 14:02:33 +00:00
fieldbus_dev.h staging: fieldbus: move "offline mode" definition to fieldbus core 2019-09-30 21:58:03 +02:00
Kconfig
Makefile
TODO