linux-kernel - [PATCHv2] usb: ehci: unlink_empty_async_suspended() only used with CONFIG

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Message-Id: <1364362080-8489-1-git-send-email-linux@prisktech.co.nz>
Date:	Wed, 27 Mar 2013 18:28:00 +1300
From:	Tony Prisk <linux@...sktech.co.nz>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, stern@...land.harvard.edu,
	Tony Prisk <linux@...sktech.co.nz>
Subject: [PATCHv2] usb: ehci: unlink_empty_async_suspended() only used with CONFIG_PM

Compiling with !CONFIG_PM generates an unused function warning on
unlink_empty_async_suspended().

Enclose the function in a #ifdef CONFIG_PM

Signed-off-by: Tony Prisk <linux@...sktech.co.nz>
Acked-by: Alan Stern <stern@...land.harvard.edu>
---
v2:
Tidy up blank line as requested by Alan Stern
 drivers/usb/host/ehci-q.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 23d1369..1ea4de1 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1316,6 +1316,7 @@ static void unlink_empty_async(struct ehci_hcd *ehci)
 	}
 }
 
+#ifdef CONFIG_PM
 /* The root hub is suspended; unlink all the async QHs */
 static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
 {
@@ -1328,6 +1329,7 @@ static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
 	}
 	start_iaa_cycle(ehci, false);
 }
+#endif
 
 /* makes sure the async qh will become idle */
 /* caller must own ehci->lock */
-- 
1.7.9.5

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