diff --git a/target/linux/generic-2.6/patches-2.6.25/906-msdosfs_header.patch b/target/linux/generic-2.6/patches-2.6.25/906-msdosfs_header.patch
new file mode 100644
index 000000000..128e0db94
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.25/906-msdosfs_header.patch
@@ -0,0 +1,16 @@
+--- a/include/linux/msdos_fs.h
++++ b/include/linux/msdos_fs.h
+@@ -57,11 +57,13 @@
+ #define MSDOS_DOT	".          "	/* ".", padded to MSDOS_NAME chars */
+ #define MSDOS_DOTDOT	"..         "	/* "..", padded to MSDOS_NAME chars */
+ 
++#ifdef __KERNEL__
+ /* media of boot sector */
+ static inline int fat_valid_media(u8 media)
+ {
+ 	return 0xf8 <= media || media == 0xf0;
+ }
++#endif
+ 
+ #define FAT_FIRST_ENT(s, x)	((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : \
+ 	MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x))