On Thu, Mar 12 2015 at 06:34 -0600, Daniel Lezcano wrote:
On 03/11/2015 07:16 PM, Stephen Boyd wrote:
On 03/09/15 08:16, Lina Iyer wrote:
[...]
+#if IS_ENABLED(CONFIG_QCOM_PM)
Why not #ifdef CONFIG_QCOM_PM? I thought IS_ENABLED was for C code where
you want to put it in an if () statement.
This is right. But the IS_ENABLED is also valid.
It seems the current trend is to replace #ifdef with #if IS_ENABLED.
It is supposed to prevent to create or'ed conditional with the module
support.
eg:
#if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE)
is replaced by:
#if IS_ENABLED(CONFIG_FOO)
Lina: By the way, it would be preferable to use the
CONFIG_ARM_QCOM_CPUIDLE where IS_ENABLED makes more sense even the
Daniel: I dont have CONFIG_ARM_QCOM_CPUIDLE defined anymore. By moving
to generic ARM cpuidle, i removed all changes to drivers/cpuidle/. So I
used the config item that defineds these items.
Also, having two indpendent CONFIG_ items provides a chance that the
declaration is not matched with the definition or vice versa.
drivers are not modules (who knows if they are converted as module
again hence #ifdef will be invalid).
+CPUIDLE_OPS(qcom_kpss_v1)
+CPUIDLE_OPS(qcom_kpss_v2)
+#endif
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