linux-kernel - Re: [Outreachy kernel] [PATCH v2] staging: xgifb: correct the multiple line dereference

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Date:   Sat, 25 Feb 2017 07:31:10 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Arushi Singhal <arushisinghal19971997@...il.com>
cc:     arnaud.patard@...-net.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        outreachy-kernel@...glegroups.com
Subject: Re: [Outreachy kernel] [PATCH v2] staging: xgifb: correct the multiple
 line dereference



On Sat, 25 Feb 2017, Arushi Singhal wrote:

> Error was reported by checkpatch.pl as
> WARNING: Avoid multiple line dereference...
> And If there is boolean operator then it is fixed by Splitting line at
> boolean operator.This is a coding style error.

There is strange spacing and capitalization in the above two lines.  Only
the first word in a sentence should be capitalized.  There should be at
least one space after a period.

> The changes are made such that the other errors does not generate
> beacause of this change like line exceeding 80 characters length.

This doesn't say anything about what you did.

> Signed-off-by: Arushi Singhal <arushisinghal19971997@...il.com>
> ---
>  changes in v2
>  - changes done such that no other errors can generate.
> ---

You don't need --- here.  Only the one just below the Signed off by.

julia

>  drivers/staging/xgifb/XGI_main_26.c | 21 +++++++++------------
>  drivers/staging/xgifb/vb_setmode.c  | 14 +++++++-------
>  2 files changed, 16 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
> index 6930f7eb741b..651987398d42 100644
> --- a/drivers/staging/xgifb/XGI_main_26.c
> +++ b/drivers/staging/xgifb/XGI_main_26.c
> @@ -878,30 +878,27 @@ static void XGIfb_post_setmode(struct xgifb_video_info *xgifb_info)
>  			}
>
>  			if ((filter >= 0) && (filter <= 7)) {
> +				const u8 *f = XGI_TV_filter[filter_tb].filter[filter];
> +
>  				pr_debug("FilterTable[%d]-%d: %*ph\n",
>  					 filter_tb, filter,
> -					 4, XGI_TV_filter[filter_tb].
> -						   filter[filter]);
> +					 4, f);
>  				xgifb_reg_set(
>  					XGIPART2,
>  					0x35,
> -					(XGI_TV_filter[filter_tb].
> -						filter[filter][0]));
> -				xgifb_reg_set(
> +					(f[0]));
> +			        xgifb_reg_set(
>  					XGIPART2,
>  					0x36,
> -					(XGI_TV_filter[filter_tb].
> -						filter[filter][1]));
> -				xgifb_reg_set(
> +					(f[1]));
> +			        xgifb_reg_set(
>  					XGIPART2,
>  					0x37,
> -					(XGI_TV_filter[filter_tb].
> -						filter[filter][2]));
> +					(f[2]));
>  				xgifb_reg_set(
>  					XGIPART2,
>  					0x38,
> -					(XGI_TV_filter[filter_tb].
> -						filter[filter][3]));
> +					(f[3]));
>  			}
>  		}
>  	}
> diff --git a/drivers/staging/xgifb/vb_setmode.c b/drivers/staging/xgifb/vb_setmode.c
> index 7c7c8c8f1df3..1220d0cea87d 100644
> --- a/drivers/staging/xgifb/vb_setmode.c
> +++ b/drivers/staging/xgifb/vb_setmode.c
> @@ -221,8 +221,8 @@ static unsigned char XGI_AjustCRT2Rate(unsigned short ModeIdIndex,
>
>  	for (; XGI330_RefIndex[RefreshRateTableIndex + (*i)].ModeID ==
>  	       tempbx; (*i)--) {
> -		infoflag = XGI330_RefIndex[RefreshRateTableIndex + (*i)].
> -				Ext_InfoFlag;
> +		infoflag =
> +		XGI330_RefIndex[RefreshRateTableIndex + (*i)].Ext_InfoFlag;
>  		if (infoflag & tempax)
>  			return 1;
>
> @@ -231,8 +231,8 @@ static unsigned char XGI_AjustCRT2Rate(unsigned short ModeIdIndex,
>  	}
>
>  	for ((*i) = 0;; (*i)++) {
> -		infoflag = XGI330_RefIndex[RefreshRateTableIndex + (*i)].
> -				Ext_InfoFlag;
> +		infoflag =
> +		XGI330_RefIndex[RefreshRateTableIndex + (*i)].Ext_InfoFlag;
>  		if (XGI330_RefIndex[RefreshRateTableIndex + (*i)].ModeID
>  				!= tempbx) {
>  			return 0;
> @@ -5092,8 +5092,8 @@ unsigned short XGI_GetRatePtrCRT2(struct xgi_hw_device_info *pXGIHWDE,
>
>  	i = 0;
>  	do {
> -		if (XGI330_RefIndex[RefreshRateTableIndex + i].
> -			ModeID != ModeNo)
> +		if (XGI330_RefIndex[RefreshRateTableIndex + i].ModeID
> +				!= ModeNo)
>  			break;
>  		temp = XGI330_RefIndex[RefreshRateTableIndex + i].Ext_InfoFlag;
>  		temp &= ModeTypeMask;
> @@ -5484,7 +5484,7 @@ unsigned char XGISetModeNew(struct xgifb_video_info *xgifb_info,
>  				return 0;
>
>  		pVBInfo->ModeType = XGI330_EModeIDTable[ModeIdIndex].
> -						Ext_ModeFlag & ModeTypeMask;
> +				Ext_ModeFlag & ModeTypeMask;
>
>  		pVBInfo->SetFlag = 0;
>  		pVBInfo->VBInfo = DisableCRT2Display;
> --
> 2.11.0
>
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