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-rw-r--r--isys/pdc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/isys/pdc.c b/isys/pdc.c
index 4ecbb7ccb..c69e5252e 100644
--- a/isys/pdc.c
+++ b/isys/pdc.c
@@ -28,6 +28,10 @@ typedef uint32_t u_int32_t;
typedef unsigned int uint32_t;
#endif
+#ifndef BLKSSZGET
+#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
+#endif
+
struct promise_raid_conf {
char promise_id[24];
#define PR_MAGIC "Promise Technology, Inc."