linux-kernel - Re: [PATCH V6 07/10] USB: f81232: fix error in f81232_carrier

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Message-ID: <20150217094450.GT2551@localhost>
Date:	Tue, 17 Feb 2015 16:44:50 +0700
From:	Johan Hovold <johan@...nel.org>
To:	Peter Hung <hpeter@...il.com>
Cc:	johan@...nel.org, gregkh@...uxfoundation.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	tom_tsai@...tek.com.tw, peter_hong@...tek.com.tw,
	Peter Hung <hpeter+linux_kernel@...il.com>
Subject: Re: [PATCH V6 07/10] USB: f81232: fix error in
 f81232_carrier_raised()

On Mon, Feb 16, 2015 at 03:57:59PM +0800, Peter Hung wrote:
> It's should compared with UART_MSR_DCD, not UART_DCD.
> also we clean-up some non-used define to avoid impropriety use.
> 
> Signed-off-by: Peter Hung <hpeter+linux_kernel@...il.com>
> ---
>  drivers/usb/serial/f81232.c | 16 +---------------
>  1 file changed, 1 insertion(+), 15 deletions(-)
> 
> diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
> index e70ec62..c87a3eb 100644
> --- a/drivers/usb/serial/f81232.c
> +++ b/drivers/usb/serial/f81232.c
> @@ -47,20 +47,6 @@ MODULE_DEVICE_TABLE(usb, id_table);
>  #define MODEM_CONTROL_REGISTER     (0x04 + SERIAL_BASE_ADDRESS)
>  #define MODEM_STATUS_REGISTER      (0x06 + SERIAL_BASE_ADDRESS)
>  
> -#define CONTROL_DTR			0x01
> -#define CONTROL_RTS			0x02
> -
> -#define UART_STATE			0x08
> -#define UART_STATE_TRANSIENT_MASK	0x74
> -#define UART_DCD			0x01
> -#define UART_DSR			0x02
> -#define UART_BREAK_ERROR		0x04
> -#define UART_RING			0x08
> -#define UART_FRAME_ERROR		0x10
> -#define UART_PARITY_ERROR		0x20
> -#define UART_OVERRUN_ERROR		0x40
> -#define UART_CTS			0x80
> -
>  struct f81232_private {
>  	spinlock_t lock;
>  	u8 line_control;
> @@ -511,7 +497,7 @@ static void f81232_dtr_rts(struct usb_serial_port *port, int on)
>  static int f81232_carrier_raised(struct usb_serial_port *port)
>  {
>  	struct f81232_private *priv = usb_get_serial_port_data(port);
> -	if (priv->modem_status & UART_DCD)
> +	if (priv->modem_status & UART_MSR_DCD)

Could you fix the separately before removing the unused defines and also
add the missing locking?

>  		return 1;
>  	return 0;
>  }

Thanks,
Johan
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