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Diffstat (limited to 'drivers/char/moxa.c')
-rw-r--r--drivers/char/moxa.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 22755ea47f18..e942e6ed978b 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -189,7 +189,7 @@ static struct mxser_mstatus GMStatus[MAX_PORTS];
#define WAKEUP_CHARS 256
-#define PORTNO(x) (minor((x)->device) - (x)->driver->minor_start)
+#define PORTNO(x) ((x)->index)
static int verbose = 0;
static int ttymajor = MOXAMAJOR;