linux-kernel - [PATCH] [firmware_class] Fix compile with no builtin firmware

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Date:	Tue, 20 Nov 2012 09:45:14 -0500
From:	Solomon Peachy <pizza@...ftnet.org>
To:	linux-kernel@...r.kernel.org
Cc:	Solomon Peachy <pizza@...ftnet.org>, stable@...r.kernel.org
Subject: [PATCH] [firmware_class]  Fix compile with no builtin firmware

When compiling the firmware loader, the builtin firmware functions were
erroneously compiled as they were wrapped with CONFIG_FW_LOADER instead
of CONFIG_FIRMWARE_IN_KERNEL.  This is normally harmless, except when
there was actually no firmware to compile into the kernel, causing the
build to fail with a linking error:

drivers/built-in.o: In function `release_firmware':
(.text+0x192e2): undefined reference to `__end_builtin_fw'
drivers/built-in.o: In function `release_firmware':
(.text+0x19304): undefined reference to `__end_builtin_fw'
drivers/built-in.o: In function `_request_firmware':
firmware_class.c:(.text+0x1986c): undefined reference to `__end_builtin_fw'
firmware_class.c:(.text+0x19886): undefined reference to `__end_builtin_fw'
firmware_class.c:(.text+0x19a98): undefined reference to `__end_builtin_fw'
drivers/built-in.o: In function `release_firmware':
(.text+0x192dc): undefined reference to `__start_builtin_fw'
drivers/built-in.o: In function `_request_firmware':
firmware_class.c:(.text+0x19860): undefined reference to `__start_builtin_fw'
firmware_class.c:(.text+0x19a8a): undefined reference to `__start_builtin_fw'

This trivial patch fixes this oversight.

Signed-off-by: Solomon Peachy <pizza@...ftnet.org>
CC: stable@...r.kernel.org
---
 drivers/base/firmware_class.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 8945f4e..3474e7f 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -38,7 +38,7 @@ MODULE_LICENSE("GPL");
 
 /* Builtin firmware support */
 
-#ifdef CONFIG_FW_LOADER
+#ifdef CONFIG_FIRMWARE_IN_KERNEL
 
 extern struct builtin_fw __start_builtin_fw[];
 extern struct builtin_fw __end_builtin_fw[];
-- 
1.7.11.7

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