diff --git a/sys/dev/powermng/intpm/intpm.c b/sys/dev/powermng/intpm/intpm.c
--- a/sys/dev/powermng/intpm/intpm.c
+++ b/sys/dev/powermng/intpm/intpm.c
@@ -838,7 +838,7 @@
 {
 	struct intsmb_softc *sc = device_get_softc(dev);
 	int error, i;
-	u_char data, nread;
+	u_char nread;
 
 	INTSMB_LOCK(sc);
 	error = intsmb_free(sc);
@@ -860,7 +860,7 @@
 		if (nread != 0 && nread <= SMBBLOCKTRANS_MAX) {
 			*count = nread;
 			for (i = 0; i < nread; i++)
-				data = bus_read_1(sc->io_res, PIIX4_SMBBLKDAT);
+				buf[i] = bus_read_1(sc->io_res, PIIX4_SMBBLKDAT);
 		} else {
 			error = SMB_EBUSERR;
 		}