linux-kernel - [PATCH] pcmcia: Guard yenta_dev_{resume,suspend}_noirq() on CONFIG_PM

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Message-Id: <20220111165004.1764190-1-nathan@kernel.org>
Date:   Tue, 11 Jan 2022 09:50:04 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Dominik Brodowski <linux@...inikbrodowski.net>
Cc:     Cai Huoqing <caihuoqing@...du.com>, linux-kernel@...r.kernel.org,
        Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH] pcmcia: Guard yenta_dev_{resume,suspend}_noirq() on CONFIG_PM_SLEEP

When building without CONFIG_PM_SLEEP:

drivers/pcmcia/yenta_socket.c:1322:12: error: ‘yenta_dev_resume_noirq’ defined but not used [-Werror=unused-function]
 1322 | static int yenta_dev_resume_noirq(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~~~~~~
drivers/pcmcia/yenta_socket.c:1303:12: error: ‘yenta_dev_suspend_noirq’ defined but not used [-Werror=unused-function]
 1303 | static int yenta_dev_suspend_noirq(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

SET_NOIRQ_SYSTEM_SLEEP_PM_OPS evaluates to an empty macro when
CONFIG_PM_SLEEP is not set. Every callback in yenta_pm_ops depends on
CONFIG_PM_SLEEP to work properly so just guard this whole block on
CONFIG_PM_SLEEP, rather than CONFIG_PM, which CONFIG_PM_SLEEP will
select.

Fixes: 3daaf2c7aae8 ("pcmcia: Make use of the helper macro SET_NOIRQ_SYSTEM_SLEEP_PM_OPS()")
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
---
 drivers/pcmcia/yenta_socket.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index 837877daed62..3966a6ceb1ac 100644
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -1299,7 +1299,7 @@ static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	return ret;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int yenta_dev_suspend_noirq(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);

base-commit: fbb3485f1f931102d8ba606f1c28123f5b48afa3
-- 
2.34.1