pwm: Make .get_state() callback return an error code #2
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[ Upstream commit 6c452cff79f8bf1c0146fda598d32061cfd25443 ] .get_state() might fail in some cases. To make it possible that a driver signals such a failure change the prototype of .get_state() to return an error code. So for now all drivers return success unconditionally. They are adapted in the following patches to make the changes easier reviewable. Signed-off-by: Christian Herzig <cherzig@gauselmann.de>
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[ Upstream commit 6c452cff79f8bf1c0146fda598d32061cfd25443 ]
.get_state() might fail in some cases. To make it possible that a driver signals such a failure change the prototype of .get_state() to return an error code.
So for now all drivers return success unconditionally. They are adapted in the following patches to make the changes easier reviewable.