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-rw-r--r--include/uapi/linux/msdos_fs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/msdos_fs.h b/include/uapi/linux/msdos_fs.h
index e956704f5fb1..95b8a9395ec1 100644
--- a/include/uapi/linux/msdos_fs.h
+++ b/include/uapi/linux/msdos_fs.h
@@ -9,7 +9,9 @@
* The MS-DOS filesystem constants/structures
*/
+#ifndef SECTOR_SIZE
#define SECTOR_SIZE 512 /* sector size (bytes) */
+#endif
#define SECTOR_BITS 9 /* log2(SECTOR_SIZE) */
#define MSDOS_DPB (MSDOS_DPS) /* dir entries per block */
#define MSDOS_DPB_BITS 4 /* log2(MSDOS_DPB) */