tree d1e55da4044af483889a06943488f11919b970e0
parent aa3a4d12093b818ac2b9fe3e0454ae0090201254
author Alex Elder <elder@linaro.org> 1416956042 -0600
committer Greg Kroah-Hartman <greg@kroah.com> 1416956735 -0800

greybus: update operation result atomically

An operation result can be set both in and out of interrupt context.
For example, a response message could be arriving at the same time a
timeout of the operation is getting processed.  We therefore need to
ensure the result is accessed atomically.

Protect updates to the errno field using the operations spinlock.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>