forked from rubenslte/android_kernel_samsung_msm8226
Nishanth Menon
c36e1375e7
Currently the opp_find* functions return -ENODEV when: a) it cant find a device (e.g. request for an OPP search on device which was not registered) b) When it cant find a match for the search strategy used This makes life a little in-efficient for users such as devfreq to make reasonable judgement before switching search strategies. So, standardize the return results as following: -EINVAL for bad pointer parameters -ENODEV when device cannot be found -ERANGE when search fails This has the following benefit for devfreq implementation: The search fails when an unregistered device pointer is provided. This is a trigger to change the search direction and search for a better fit, however, if we cannot differentiate between a valid search range failure Vs an unregistered device, second search goes through the same fail return condition. This can be avoided by appropriate handling of error return code. With this change, we also fix devfreq for the improved search strategy with updated error code. Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Git-commit: 0779726cc265805d0f7c7dd1d791fa4076b31a9a Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Change-Id: I95c9d1aaf7ad8dbaff77ab3d57a7b8fe8d599764 Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>