serial: jsm: some off by one bugs

"brd->nasync" amd "brd->maxports" are the same.  They hold the number of
filled out channels in the brd->channels[] array.  These tests should
be ">=" instead of ">" so that we don't read one element past the end.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 4 insertions, 4 deletions

diff --git a/drivers/tty/serial/jsm/jsm_cls.c b/drivers/tty/serial/jsm/jsm_cls.c
index bfb0681195b6..4eb12a9cae76 100644
--- a/drivers/tty/serial/jsm/jsm_cls.c
+++ b/drivers/tty/serial/jsm/jsm_cls.c
@@ -570,7 +570,7 @@ static inline void cls_parse_isr(struct jsm_board *brd, uint port)
          * verified in the interrupt routine.
          */
 
-        if (port > brd->nasync)
+        if (port >= brd->nasync)
                 return;
 
         ch = brd->channels[port];
diff --git a/drivers/tty/serial/jsm/jsm_neo.c b/drivers/tty/serial/jsm/jsm_neo.c
index 7291c2117daa..932b2accd06f 100644
--- a/drivers/tty/serial/jsm/jsm_neo.c
+++ b/drivers/tty/serial/jsm/jsm_neo.c
@@ -724,7 +724,7 @@ static inline void neo_parse_isr(struct jsm_board *brd, u32 port)
         if (!brd)
                 return;
 
-        if (port > brd->maxports)
+        if (port >= brd->maxports)
                 return;
 
         ch = brd->channels[port];
@@ -840,7 +840,7 @@ static inline void neo_parse_lsr(struct jsm_board *brd, u32 port)
         if (!brd)
                 return;
 
-        if (port > brd->maxports)
+        if (port >= brd->maxports)
                 return;
 
         ch = brd->channels[port];
@@ -1180,7 +1180,7 @@ static irqreturn_t neo_intr(int irq, void *voidbrd)
                          */
 
                         /* Verify the port is in range. */
-                        if (port > brd->nasync)
+                        if (port >= brd->nasync)
                                 continue;
 
                         ch = brd->channels[port];