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-rw-r--r--include/asm-s390/cmb.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-s390/cmb.h b/include/asm-s390/cmb.h
index dae1dd4fb93..2d09950a9c1 100644
--- a/include/asm-s390/cmb.h
+++ b/include/asm-s390/cmb.h
@@ -47,7 +47,7 @@ struct cmbdata {
/* reset channel measurement block */
#define BIODASDRESETCMB _IO(DASD_IOCTL_LETTER,34)
/* read channel measurement data */
-#define BIODASDREADCMB _IOWR(DASD_IOCTL_LETTER,32,u64)
+#define BIODASDREADCMB _IOWR(DASD_IOCTL_LETTER,32,__u64)
/* read channel measurement data */
#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER,33,struct cmbdata)