linux-kernel - Re: [PATCH v2 6/6] usb: dwc3: exynos: Switch from CONFIG_PM_SLEEP guards to pm_sleep

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Date: Tue, 9 Apr 2024 01:54:37 +0000
From: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To: Anand Moon <linux.amoon@...il.com>
CC: Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Johan Hovold <johan@...nel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
        "linux-samsung-soc@...r.kernel.org" <linux-samsung-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 6/6] usb: dwc3: exynos: Switch from CONFIG_PM_SLEEP
 guards to pm_sleep_ptr()

On Thu, Apr 04, 2024, Anand Moon wrote:
> Use the new PM macros for the suspend and resume functions to be
> automatically dropped by the compiler when CONFIG_PM_SLEEP are disabled,
> without having to use #ifdef guards. If CONFIG_PM_SLEEP unused,
> they will simply be discarded by the compiler.
> 
> Signed-off-by: Anand Moon <linux.amoon@...il.com>
> ---
> v2: add __maybe_unused to suspend/resume functions in case CONFIG_PM is
>    disabled.

The compiler discards the code, yet we still need __maybe_unused?

BR,
Thinh

> ---
>  drivers/usb/dwc3/dwc3-exynos.c | 12 +++---------
>  1 file changed, 3 insertions(+), 9 deletions(-)
>