linux-kernel - Re: [PATCH v2] brcmfmac: Remove #ifdef guards for PM related functions

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Message-Id: <WHVZDR.GB0H9SQC9PDP@crapouillou.net>
Date:   Fri, 24 Jun 2022 19:32:20 +0100
From:   Paul Cercueil <paul@...pouillou.net>
To:     Jeff Johnson <quic_jjohnson@...cinc.com>
Cc:     Arend Van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] brcmfmac: Remove #ifdef guards for PM related
 functions

Hi,

Le ven., juin 24 2022 at 09:31:22 -0700, Jeff Johnson 
<quic_jjohnson@...cinc.com> a écrit :
> On 6/24/2022 2:24 AM, Arend Van Spriel wrote:
>> On 6/23/2022 2:42 PM, Paul Cercueil wrote:
> 
> [snip]
> 
>>> -    if (sdiodev->freezer) {
>>> +    if (IS_ENABLED(CONFIG_PM_SLEEP) && sdiodev->freezer) {
>> 
>> This change is not necessary. sdiodev->freezer will be NULL when 
>> CONFIG_PM_SLEEP is not enabled.
> 
> but won't the compiler be able to completely optimize the code away 
> if the change is present?

That's correct. But do we want to complexify a bit the code for the 
sake of saving a few bytes? I leave that as an open question to the 
maintainer, I'm really fine with both options.

Cheers,
-Paul