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[3.8,75/81] serial: vt8500: Fix range-checking on vt8500_uart_ports

Message ID 1383069882-11437-76-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa Oct. 29, 2013, 6:04 p.m. UTC 
3.8.13.12 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tony Prisk <linux@prisktech.co.nz>

commit 27dd2e04923341cff96aae164117c44da1072c32 upstream.

Fix two instances where the index to vt8500_uart_ports is tested
against > VT8500_MAX_PORTS. Correct usage should be >= VT8500_MAX_PORTS.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/tty/serial/vt8500_serial.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index d5ed9f6..90b837f 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -569,7 +569,7 @@  static int vt8500_serial_probe(struct platform_device *pdev)
 
 	if (np)
 		port = of_alias_get_id(np, "serial");
-		if (port > VT8500_MAX_PORTS)
+		if (port >= VT8500_MAX_PORTS)
 			port = -1;
 	else
 		port = -1;
@@ -580,7 +580,7 @@  static int vt8500_serial_probe(struct platform_device *pdev)
 					sizeof(vt8500_ports_in_use));
 	}
 
-	if (port > VT8500_MAX_PORTS)
+	if (port >= VT8500_MAX_PORTS)
 		return -ENODEV;
 
 	/* reserve the port id */