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path: root/drivers/tty/serial/ma35d1_serial.c
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Diffstat (limited to 'drivers/tty/serial/ma35d1_serial.c')
-rw-r--r--drivers/tty/serial/ma35d1_serial.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/tty/serial/ma35d1_serial.c b/drivers/tty/serial/ma35d1_serial.c
index f9c6c75d9776..b4dcbd0c95bf 100644
--- a/drivers/tty/serial/ma35d1_serial.c
+++ b/drivers/tty/serial/ma35d1_serial.c
@@ -552,11 +552,19 @@ static void ma35d1serial_console_putchar(struct uart_port *port, unsigned char c
*/
static void ma35d1serial_console_write(struct console *co, const char *s, u32 count)
{
- struct uart_ma35d1_port *up = &ma35d1serial_ports[co->index];
+ struct uart_ma35d1_port *up;
unsigned long flags;
int locked = 1;
u32 ier;
+ if ((co->index < 0) || (co->index >= MA35_UART_NR)) {
+ pr_warn("Failed to write on ononsole port %x, out of range\n",
+ co->index);
+ return;
+ }
+
+ up = &ma35d1serial_ports[co->index];
+
if (up->port.sysrq)
locked = 0;
else if (oops_in_progress)