spi: document odd controller reference handling

Browse source

Document the fact that a reference to the controller is dropped as part
of deregistration.

This is an odd pattern as the reference is typically taken in
__spi_alloc_controller() rather than spi_register_controller(). Most
controller drivers gets it right these days and notably the
device-managed interface relies on this behaviour.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Johan Hovold 2017-10-30 11:35:26 +01:00 • committed by Mark Brown

parent 2bd6bf03f4

commit 68b892f1fd

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

1 changed files with 3 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

drivers/spi/spi.c

View file