Use the newly introduced pm_ptr() macro, and mark the suspend/resume
functions __maybe_unused. These functions can then be moved outside the
CONFIG_PM_SUSPEND block, and the compiler can then process them and
detect build failures independently of the config. If unused, they will
simply be discarded by the compiler.

Signed-off-by: Paul Cercueil <[email protected]>
---
 drivers/usb/gadget/udc/pch_udc.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index 8afc31d94b0e..9e26b5ab3058 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -3042,8 +3042,7 @@ static void pch_udc_remove(struct pci_dev *pdev)
        pch_udc_exit(dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int pch_udc_suspend(struct device *d)
+static int __maybe_unused pch_udc_suspend(struct device *d)
 {
        struct pch_udc_dev *dev = dev_get_drvdata(d);
 
@@ -3053,16 +3052,12 @@ static int pch_udc_suspend(struct device *d)
        return 0;
 }
 
-static int pch_udc_resume(struct device *d)
+static int __maybe_unused pch_udc_resume(struct device *d)
 {
        return 0;
 }
 
 static SIMPLE_DEV_PM_OPS(pch_udc_pm, pch_udc_suspend, pch_udc_resume);
-#define PCH_UDC_PM_OPS         (&pch_udc_pm)
-#else
-#define PCH_UDC_PM_OPS         NULL
-#endif /* CONFIG_PM_SLEEP */
 
 static int pch_udc_probe(struct pci_dev *pdev,
                          const struct pci_device_id *id)
@@ -3171,7 +3166,7 @@ static struct pci_driver pch_udc_driver = {
        .remove =       pch_udc_remove,
        .shutdown =     pch_udc_shutdown,
        .driver = {
-               .pm = PCH_UDC_PM_OPS,
+               .pm = pm_ptr(&pch_udc_pm),
        },
 };
 
-- 
2.28.0

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