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-rw-r--r--sys/dev/ismt/ismt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/dev/ismt/ismt.c b/sys/dev/ismt/ismt.c
index dc90e3f..3fbcfed 100644
--- a/sys/dev/ismt/ismt.c
+++ b/sys/dev/ismt/ismt.c
@@ -72,7 +72,7 @@ __FBSDID("$FreeBSD$");
#define ISMT_DESC_LPR 0x80 /* Large Packet Received */
/* Macros */
-#define ISMT_DESC_ADDR_RW(addr, is_read) ((addr) | (is_read))
+#define ISMT_DESC_ADDR_RW(addr, is_read) ((addr << 1) | (is_read))
/* iSMT General Register address offsets (SMBBAR + <addr>) */
#define ISMT_GR_GCTRL 0x000 /* General Control */
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