linux-kernel - Re: [PATCH 1/4] silicom: checkpatch: assignments in if conditions

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Date:	Mon, 17 Jun 2013 20:22:46 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Lorenz Haspel <lorenz@...gers.com>
Cc:	devel@...uxdriverproject.org, gregkh@...uxfoundation.org,
	puff65537@...sheeslibrary.com, viro@...iv.linux.org.uk,
	michael.banken@...he.stud.uni-erlangen.de,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	linux-kernel@...informatik.uni-erlangen.de
Subject: Re: [PATCH 1/4] silicom: checkpatch: assignments in if conditions

This will need to be redone because there were some buggy extra
lines added toward the end of the patch.

On Mon, Jun 17, 2013 at 06:26:23PM +0200, Lorenz Haspel wrote:
> @@ -1743,8 +1750,8 @@ static void write_data_port_int(bpctl_dev_t *pbpctl_dev,
>  static int write_data_int(bpctl_dev_t *pbpctl_dev, unsigned char value)
>  {
>  	bpctl_dev_t *pbpctl_dev_b = NULL;
> -

This blank line is needed.  (Put a blank line between declarations
and code).

> -	if (!(pbpctl_dev_b = get_status_port_fn(pbpctl_dev)))
> +	pbpctl_dev_b = get_status_port_fn(pbpctl_dev);
> +	if (!pbpctl_dev_b)
>  		return -1;
>  	atomic_set(&pbpctl_dev->wdt_busy, 1);
>  	write_data_port_int(pbpctl_dev, value & 0x3);
> @@ -1965,7 +1972,8 @@ int tpl_hw_on(bpctl_dev_t *pbpctl_dev)
>  	int ret = 0, ctrl = 0;
>  	bpctl_dev_t *pbpctl_dev_b = NULL;
>  
> -	if (!(pbpctl_dev_b = get_status_port_fn(pbpctl_dev)))
> +	pbpctl_dev_b = get_status_port_fn(pbpctl_dev);
> +	if (!pbpctl_dev_b)
>  		return BP_NOT_CAP;
>  
>  	if (pbpctl_dev->bp_caps_ex & TPL2_CAP_EX) {

> @@ -1991,8 +1999,8 @@ int tpl_hw_off(bpctl_dev_t *pbpctl_dev)
>  {
>  	int ret = 0, ctrl = 0;
>  	bpctl_dev_t *pbpctl_dev_b = NULL;
> -

Same for this blank line and all the following instances.

> -	if (!(pbpctl_dev_b = get_status_port_fn(pbpctl_dev)))
> +	pbpctl_dev_b = get_status_port_fn(pbpctl_dev);
> +	if (!pbpctl_dev_b)
>  		return BP_NOT_CAP;
>  	if (pbpctl_dev->bp_caps_ex & TPL2_CAP_EX) {
>  		cmnd_on(pbpctl_dev);

> @@ -4461,11 +4472,13 @@ int set_bypass_pwoff_fn(bpctl_dev_t *pbpctl_dev, int bypass_mode)
>  
>  	if (!(pbpctl_dev->bp_caps & BP_PWOFF_CTL_CAP))
>  		return BP_NOT_CAP;
> -	if ((ret = cmnd_on(pbpctl_dev)) < 0)
> +	ret = cmnd_on(pbpctl_dev);
> +	if (ret < 0)
>  		return ret;
>  	if (bypass_mode)
>  		ret = bypass_state_pwroff(pbpctl_dev);
> -	else
> +	ret = cmnd_on(pbpctl_dev);
> +	if (ret < 0)
>  		ret = normal_state_pwroff(pbpctl_dev);

These added lines do not belong.  The patch will need to be redone
to fix this bug.

>  	cmnd_off(pbpctl_dev);
>  	return ret;

> @@ -4867,10 +4884,12 @@ int set_tx_fn(bpctl_dev_t *pbpctl_dev, int tx_state)
>  	    (pbpctl_dev->bp_caps & SW_CTL_CAP)) {
>  		if ((pbpctl_dev->bp_tpl_flag))
>  			return BP_NOT_CAP;
> -	} else if ((pbpctl_dev_b = get_master_port_fn(pbpctl_dev))) {
> -		if ((pbpctl_dev_b->bp_caps & TPL_CAP) &&
> -		    (pbpctl_dev_b->bp_tpl_flag))
> -			return BP_NOT_CAP;
> +	} else {
> +		pbpctl_dev_b = get_status_port_fn(pbpctl_dev);
> +		if (pbpctl_dev_b)
> +			if ((pbpctl_dev_b->bp_caps & TPL_CAP) &&
> +			    (pbpctl_dev_b->bp_tpl_flag))
> +				return BP_NOT_CAP;

Please put curly brace {} around multi-line indents.  Even though
they are not needed for semantic reasons they make the code more
readable.

>  	}
>  	return set_tx(pbpctl_dev, tx_state);
>  }

regards,
dan carpenter
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