linux-kernel - [PATCH] fix nouveau build error on !CONFIG_MXM

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Date:	Wed, 25 Jul 2012 15:46:21 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Dave Airlie <airlied@...hat.com>
Cc:	dri-devel@...ts.freedesktop.org,
	LKML <linux-kernel@...r.kernel.org>,
	Ben Skeggs <bskeggs@...hat.com>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>
Subject: [PATCH] fix nouveau build error on !CONFIG_MXM_WMI

Fix build error on IA64:

ERROR: "mxm_wmi_supported" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!

Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---
 include/linux/mxm-wmi.h |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/mxm-wmi.h b/include/linux/mxm-wmi.h
index 617a295..f6a6214 100644
--- a/include/linux/mxm-wmi.h
+++ b/include/linux/mxm-wmi.h
@@ -28,6 +28,14 @@
 #define MXM_MXDS_ADAPTER_IGD 0x10
 int mxm_wmi_call_mxds(int adapter);
 int mxm_wmi_call_mxmx(int adapter);
+
+#if IS_ENABLED(CONFIG_MXM_WMI)
 bool mxm_wmi_supported(void);
+#else
+static inline bool mxm_wmi_supported(void)
+{
+	return false;
+}
+#endif
 
 #endif
-- 
1.7.10

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