serial: max310x: Fix sparse warnings

sparse warnings: (new ones prefixed by >>)

>> drivers/tty/serial/max310x.c:906:45: sparse: incorrect type in argument 2 (different address spaces)
 drivers/tty/serial/max310x.c:906:45: expected void const [noderef] <asn:1>*from
 drivers/tty/serial/max310x.c:906:45: got struct serial_rs485 *<noident>
>> drivers/tty/serial/max310x.c:938:35: sparse: incorrect type in argument 1 (different address spaces)
 drivers/tty/serial/max310x.c:938:35: expected void [noderef] <asn:1>*to
 drivers/tty/serial/max310x.c:938:35: got struct serial_rs485 *<noident>

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 5836168414e4..471dbc1e2b58 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -882,8 +882,7 @@ static int max310x_ioctl(struct uart_port *port, unsigned int cmd,
 
         switch (cmd) {
         case TIOCSRS485:
-                if (copy_from_user(&rs485, (struct serial_rs485 *)arg,
-                                   sizeof(rs485)))
+                if (copy_from_user(&rs485, (void __user *)arg, sizeof(rs485)))
                         return -EFAULT;
                 if (rs485.delay_rts_before_send > 0x0f ||
                     rs485.delay_rts_after_send > 0x0f)
@@ -914,8 +913,7 @@ static int max310x_ioctl(struct uart_port *port, unsigned int cmd,
                 val = max310x_port_read(port, MAX310X_HDPIXDELAY_REG);
                 rs485.delay_rts_before_send = val >> 4;
                 rs485.delay_rts_after_send = val & 0x0f;
-                if (copy_to_user((struct serial_rs485 *)arg, &rs485,
-                                 sizeof(rs485)))
+                if (copy_to_user((void __user *)arg, &rs485, sizeof(rs485)))
                         return -EFAULT;
                 return 0;
         default: