linux-kernel - [PATCH -next v2] s390/ism: Remove PM support

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Date:   Thu, 26 Mar 2020 12:07:44 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Heiko Carstens <heiko.carstens@...ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>
Cc:     Julian Wiedmann <jwi@...ux.ibm.com>,
        Ursula Braun <ubraun@...ux.ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com,
        Nathan Chancellor <natechancellor@...il.com>
Subject: [PATCH -next v2] s390/ism: Remove PM support

Clang warns:

drivers/s390/net/ism_drv.c:570:12: warning: unused function
'ism_suspend' [-Wunused-function]
static int ism_suspend(struct device *dev)
           ^
drivers/s390/net/ism_drv.c:578:12: warning: unused function 'ism_resume'
[-Wunused-function]
static int ism_resume(struct device *dev)
           ^
2 warnings generated.

When CONFIG_PM is unset, SIMPLE_DEV_PM_OPS does not use the suspend or
resume functions. Power management was recently ripped out of s390 so
CONFIG_PM will never be set and these functions will always be unused.

Remove them so that there is no more warning.

Link: https://github.com/ClangBuiltLinux/linux/issues/950
Fixes: 394216275c7d ("s390: remove broken hibernate / power management support")
Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
---

v1 -> v2:

* Fix issue link in commit message...

 drivers/s390/net/ism_drv.c | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
index 4fc2056bd227..c75112ee7b97 100644
--- a/drivers/s390/net/ism_drv.c
+++ b/drivers/s390/net/ism_drv.c
@@ -567,31 +567,11 @@ static void ism_remove(struct pci_dev *pdev)
 	kfree(ism);
 }
 
-static int ism_suspend(struct device *dev)
-{
-	struct ism_dev *ism = dev_get_drvdata(dev);
-
-	ism_dev_exit(ism);
-	return 0;
-}
-
-static int ism_resume(struct device *dev)
-{
-	struct ism_dev *ism = dev_get_drvdata(dev);
-
-	return ism_dev_init(ism);
-}
-
-static SIMPLE_DEV_PM_OPS(ism_pm_ops, ism_suspend, ism_resume);
-
 static struct pci_driver ism_driver = {
 	.name	  = DRV_NAME,
 	.id_table = ism_device_table,
 	.probe	  = ism_probe,
 	.remove	  = ism_remove,
-	.driver	  = {
-		.pm = &ism_pm_ops,
-	},
 };
 
 static int __init ism_init(void)
-- 
2.26.0