diff options
| author | Pawel Wieczorkiewicz <wpawel@gmail.com> | 2013-02-20 17:26:20 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-15 13:23:29 -0700 |
| commit | 503bded92da283b2f31d87e054c4c6d30c3c2340 (patch) | |
| tree | 9c959a78eacb0afd4bea2fb8dc5b337dba63473a /drivers/tty | |
| parent | c51d41a1dd8f23a06a4ed651ebb9617de7f59368 (diff) | |
tty: atmel_serial_probe(): index of atmel_ports[] fix
Index of atmel_ports[ATMEL_MAX_UART] should be smaller
than ATMEL_MAX_UART.
Signed-off-by: Pawel Wieczorkiewicz <wpawel@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/atmel_serial.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index d4a7c241b75..3467462869c 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -158,7 +158,7 @@ struct atmel_uart_port { }; static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART]; -static unsigned long atmel_ports_in_use; +static DECLARE_BITMAP(atmel_ports_in_use, ATMEL_MAX_UART); #ifdef SUPPORT_SYSRQ static struct console atmel_console; @@ -1769,15 +1769,14 @@ static int atmel_serial_probe(struct platform_device *pdev) if (ret < 0) /* port id not found in platform data nor device-tree aliases: * auto-enumerate it */ - ret = find_first_zero_bit(&atmel_ports_in_use, - sizeof(atmel_ports_in_use)); + ret = find_first_zero_bit(atmel_ports_in_use, ATMEL_MAX_UART); - if (ret > ATMEL_MAX_UART) { + if (ret >= ATMEL_MAX_UART) { ret = -ENODEV; goto err; } - if (test_and_set_bit(ret, &atmel_ports_in_use)) { + if (test_and_set_bit(ret, atmel_ports_in_use)) { /* port already in use */ ret = -EBUSY; goto err; @@ -1857,7 +1856,7 @@ static int atmel_serial_remove(struct platform_device *pdev) /* "port" is allocated statically, so we shouldn't free it */ - clear_bit(port->line, &atmel_ports_in_use); + clear_bit(port->line, atmel_ports_in_use); clk_put(atmel_port->clk); |