From: mathias.nyman@linux.intel.com (Mathias Nyman)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/6] usb: xhci-mtk: use __maybe_unused to hide pm functions
Date: Thu, 10 Mar 2016 13:42:37 +0200 [thread overview]
Message-ID: <56E15DAD.3000104@linux.intel.com> (raw)
In-Reply-To: <56D9B8EE.3060107@gmail.com>
On 04.03.2016 18:33, Matthias Brugger wrote:
>
>
> On 02/03/16 16:24, Arnd Bergmann wrote:
>> The mediatek XHCI glue driver uses SET_SYSTEM_SLEEP_PM_OPS() to
>> conditionally set the correct suspend/resume options, and
>> also puts both the dev_pm_ops and the functions inside of
>> an #ifdef testing for CONFIG_PM_SLEEP, but those functions
>> then call other code that becomes unused:
>>
>> drivers/usb/host/xhci-mtk.c:135:12: error: 'xhci_mtk_host_disable' defined but not used [-Werror=unused-function]
>> drivers/usb/host/xhci-mtk.c:313:13: error: 'usb_wakeup_enable' defined but not used [-Werror=unused-function]
>> drivers/usb/host/xhci-mtk.c:321:13: error: 'usb_wakeup_disable' defined but not used [-Werror=unused-function]
>>
>> This replaces the #ifdef with __maybe_unused annotations so the
>> compiler knows it can silently drop them instead of warning.
>>
>> For the DEV_PM_OPS definition, we can use an IS_ENABLED() check
>> to avoid defining the structure when CONFIG_PM is not set without
>> the #ifdef.
>>
>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>> ---
>
> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
next prev parent reply other threads:[~2016-03-10 11:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-02 15:24 usb: avoid warnings for unused pm functions Arnd Bergmann
2016-03-02 15:24 ` [PATCH 1/6] usb: host: unhide suspend/resume declarations Arnd Bergmann
2016-03-02 15:58 ` Alan Stern
2016-03-02 15:24 ` [PATCH 2/6] usb: xhci-mtk: use __maybe_unused to hide pm functions Arnd Bergmann
2016-03-04 16:33 ` Matthias Brugger
2016-03-10 11:42 ` Mathias Nyman [this message]
2016-03-02 15:24 ` [PATCH 3/6] usb: ohci-at91: " Arnd Bergmann
2016-03-02 15:34 ` Nicolas Ferre
2016-03-02 15:24 ` [PATCH 4/6] usb: ehci-atmel: " Arnd Bergmann
2016-03-02 15:34 ` Nicolas Ferre
2016-03-02 15:24 ` [PATCH 5/6] phy: dm816x: " Arnd Bergmann
2016-03-02 15:24 ` [PATCH 6/6] phy: twl4030: " Arnd Bergmann
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