If CONFIG_PM is disabled, the CONFIG_PM symbol is not defined.
This results in

drivers/net/wireless/intel/iwlwifi/mld/iface.h:169:5: error:
	"CONFIG_PM_SLEEP" is not defined, evaluates to 0

because the conditional uses #if instead of #ifdef. Using #ifdef
fixes the problem.

Fixes: d1e879ec600f9 ("wifi: iwlwifi: add iwlmld sub-driver")
Cc: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
Maybe this has already been addressed. If so, sorry, I did not find it.
I did not see thos fixed in Arnd's patch addressing the other PM_SLEEP
related issues in the driver.

 drivers/net/wireless/intel/iwlwifi/mld/iface.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mld/iface.h b/drivers/net/wireless/intel/iwlwifi/mld/iface.h
index d1d56b081bf6..ec14d0736cee 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/iface.h
+++ b/drivers/net/wireless/intel/iwlwifi/mld/iface.h
@@ -166,7 +166,7 @@ struct iwl_mld_vif {
 
 	struct iwl_mld_emlsr emlsr;
 
-#if CONFIG_PM_SLEEP
+#ifdef CONFIG_PM_SLEEP
 	struct iwl_mld_wowlan_data wowlan_data;
 #endif
 #ifdef CONFIG_IWLWIFI_DEBUGFS
-- 
2.45.2

On Mon, 2025-03-31 at 20:21 -0700, Guenter Roeck wrote:
> If CONFIG_PM is disabled, the CONFIG_PM symbol is not defined.
> This results in
> 
> drivers/net/wireless/intel/iwlwifi/mld/iface.h:169:5: error:
> 	"CONFIG_PM_SLEEP" is not defined, evaluates to 0
> 
> because the conditional uses #if instead of #ifdef. Using #ifdef
> fixes the problem.
> 
> Fixes: d1e879ec600f9 ("wifi: iwlwifi: add iwlmld sub-driver")
> Cc: Miri Korenblit <miriam.rachel.korenblit@intel.com>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> Maybe this has already been addressed. If so, sorry, I did not find it.
> I did not see thos fixed in Arnd's patch addressing the other PM_SLEEP
> related issues in the driver.
> 

Hadn't, except internally I'd fixed it a while ago, and now Miri sent my
patch (same as yours) 20 minutes later ;-)

Thanks, I'll start getting things into the wireless tree soon.

johannes