patches.renesas/0206-usb-host-xhci-remove-ifdef-around-PM-functions.patch

From 5106e20c153d4a513b44cef20545120449099563 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 21 Apr 2017 23:42:54 +0200
Subject: [PATCH 206/286] usb: host: xhci: remove #ifdef around PM functions

The #ifdef is slightly wrong as it doesn't cover the xhci_priv_resume_quirk()
function, causing a harmless warning:

drivers/usb/host/xhci-plat.c:58:12: error: 'xhci_priv_resume_quirk' defined but not used [-Werror=unused-function]
 static int xhci_priv_resume_quirk(struct usb_hcd *hcd)

A simpler way to do this correctly is to use __maybe_unused annotations
that let the compiler silently drop the functions when there is no
reference.

Fixes: b0c69b4bace3 ("usb: host: plat: Enable xHCI plat runtime PM")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit d852ed98f62e0d44f594adb850b3d6cedb5c9292)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 drivers/usb/host/xhci-plat.c |   12 ++++--------
 drivers/usb/host/xhci.h      |    5 -----
 2 files changed, 4 insertions(+), 13 deletions(-)

--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -336,8 +336,7 @@ static int xhci_plat_remove(struct platf
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int xhci_plat_suspend(struct device *dev)
+static int __maybe_unused xhci_plat_suspend(struct device *dev)
 {
 	struct usb_hcd	*hcd = dev_get_drvdata(dev);
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
@@ -359,7 +358,7 @@ static int xhci_plat_suspend(struct devi
 	return ret;
 }
 
-static int xhci_plat_resume(struct device *dev)
+static int __maybe_unused xhci_plat_resume(struct device *dev)
 {
 	struct usb_hcd	*hcd = dev_get_drvdata(dev);
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
@@ -374,10 +373,8 @@ static int xhci_plat_resume(struct devic
 
 	return xhci_resume(xhci, 0);
 }
-#endif /* CONFIG_PM_SLEEP */
 
-#ifdef CONFIG_PM
-static int xhci_plat_runtime_suspend(struct device *dev)
+static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
 {
 	struct usb_hcd  *hcd = dev_get_drvdata(dev);
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
@@ -385,14 +382,13 @@ static int xhci_plat_runtime_suspend(str
 	return xhci_suspend(xhci, true);
 }
 
-static int xhci_plat_runtime_resume(struct device *dev)
+static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)
 {
 	struct usb_hcd  *hcd = dev_get_drvdata(dev);
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 
 	return xhci_resume(xhci, 0);
 }
-#endif /* CONFIG_PM */
 
 static const struct dev_pm_ops xhci_plat_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -2011,13 +2011,8 @@ void xhci_init_driver(struct hc_driver *
 int xhci_disable_slot(struct xhci_hcd *xhci,
 			struct xhci_command *command, u32 slot_id);
 
-#ifdef	CONFIG_PM
 int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);
 int xhci_resume(struct xhci_hcd *xhci, bool hibernated);
-#else
-#define	xhci_suspend	NULL
-#define	xhci_resume	NULL
-#endif
 
 irqreturn_t xhci_irq(struct usb_hcd *hcd);
 irqreturn_t xhci_msi_irq(int irq, void *hcd);