linux-kernel - Re: [PATCH 1/3] ipoctal: reset function istead of duplicate code

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Date:	Wed, 03 Sep 2014 09:52:36 +0200
From:	Samuel Iglesias Gonsálvez 
	<siglesias@...lia.com>
To:	Federico Vaga <federico.vaga@...n.ch>
Cc:	Jens Taprogge <jens.taprogge@...rogge.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	industrypack-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] ipoctal: reset function istead of duplicate code

On Tue, 2014-09-02 at 17:31 +0200, Federico Vaga wrote:
> Signed-off-by: Federico Vaga <federico.vaga@...n.ch>
> ---
>  drivers/ipack/devices/ipoctal.c |   35 ++++++++++++++---------------------
>  1 file changed, 14 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
> index 90b96a1b..e531379 100644
> --- a/drivers/ipack/devices/ipoctal.c
> +++ b/drivers/ipack/devices/ipoctal.c
> @@ -55,6 +55,16 @@ struct ipoctal {
>  	u8 __iomem			*int_space;
>  };
>  
> +static void ipoctal_reset_channel(struct ipoctal_channel *channel)
> +{
> +	iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
> +	channel->rx_enable = 0;
> +	iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
> +	iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
> +	iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
> +	iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
> +}
> +
>  static int ipoctal_port_activate(struct tty_port *port, struct tty_struct *tty)
>  {
>  	struct ipoctal_channel *channel;
> @@ -306,10 +316,7 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
>  			channel->isr_rx_rdy_mask = ISR_RxRDY_FFULL_A;
>  		}
>  
> -		iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
> -		channel->rx_enable = 0;
> -		iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
> -		iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
> +		ipoctal_reset_channel(channel);
>  		iowrite8(MR1_CHRL_8_BITS | MR1_ERROR_CHAR | MR1_RxINT_RxRDY,
>  			 &channel->regs->w.mr); /* mr1 */
>  		iowrite8(0, &channel->regs->w.mr); /* mr2 */
> @@ -469,11 +476,7 @@ static void ipoctal_set_termios(struct tty_struct *tty,
>  	cflag = tty->termios.c_cflag;
>  
>  	/* Disable and reset everything before change the setup */
> -	iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
> +	ipoctal_reset_channel(channel);
>  
>  	/* Set Bits per chars */
>  	switch (cflag & CSIZE) {
> @@ -611,12 +614,7 @@ static void ipoctal_hangup(struct tty_struct *tty)
>  
>  	tty_port_hangup(&channel->tty_port);
>  
> -	iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
> -	channel->rx_enable = 0;
> -	iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
> +	ipoctal_reset_channel(channel);
>  
>  	clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags);
>  	wake_up_interruptible(&channel->tty_port.open_wait);
> @@ -629,12 +627,7 @@ static void ipoctal_shutdown(struct tty_struct *tty)
>  	if (channel == NULL)
>  		return;
>  
> -	iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
> -	channel->rx_enable = 0;
> -	iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
> -	iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
> +	ipoctal_reset_channel(channel);
>  	clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags);
>  }
>  

Acked-by: Samuel Iglesias Gonsalvez <siglesias@...lia.com>

Sam



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