linux-kernel - [PATCH 3/4] firmware: provide stubs for the FW

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Message-Id: <1205196914-17965-3-git-send-email-gregkh@suse.de>
Date:	Mon, 10 Mar 2008 17:55:13 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	James Bottomley <James.Bottomley@...senPartnership.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 3/4] firmware: provide stubs for the FW_LOADER=n case

From: James Bottomley <James.Bottomley@...senPartnership.com>

libsas has a case where it uses the firmware loader to provide services,
but doesn't want to select it all the time.  This currently causes a
compile failure in libsas if FW_LOADER=n.  Fix this by providing error
stubs for the firmware loader API in the FW_LOADER=n case.

Signed-off-by: James Bottomley <James.Bottomley@...senPartnership.com>
Cc: Randy Dunlap <randy.dunlap@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 include/linux/firmware.h |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index 33d8f20..4d10c73 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -10,7 +10,10 @@ struct firmware {
 	size_t size;
 	u8 *data;
 };
+
 struct device;
+
+#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
 int request_firmware(const struct firmware **fw, const char *name,
 		     struct device *device);
 int request_firmware_nowait(
@@ -19,4 +22,24 @@ int request_firmware_nowait(
 	void (*cont)(const struct firmware *fw, void *context));
 
 void release_firmware(const struct firmware *fw);
+#else
+static inline int request_firmware(const struct firmware **fw,
+				   const char *name,
+				   struct device *device)
+{
+	return -EINVAL;
+}
+static inline int request_firmware_nowait(
+	struct module *module, int uevent,
+	const char *name, struct device *device, void *context,
+	void (*cont)(const struct firmware *fw, void *context))
+{
+	return -EINVAL;
+}
+
+static inline void release_firmware(const struct firmware *fw)
+{
+}
+#endif
+
 #endif
-- 
1.5.4.3

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