Re: [Outreachy kernel] [PATCH 1/3] staging: rtl8192e: replace comparison to NULL by boolean

[Julia Lawall]

On Sat, 10 Apr 2021, Mitali Borkar wrote:

> Replaced comparison to NULL by boolean expressions
> (here used boolean negations). This improves readability of code.
> Reported by checkpatch.
>
> Signed-off-by: Mitali Borkar <mitaliborkar810@xxxxxxxxx>
> ---
>  drivers/staging/rtl8192e/rtl819x_HTProc.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/staging/rtl8192e/rtl819x_HTProc.c b/drivers/staging/rtl8192e/rtl819x_HTProc.c
> index 65202dd53447..0b1e92f17805 100644
> --- a/drivers/staging/rtl8192e/rtl819x_HTProc.c
> +++ b/drivers/staging/rtl8192e/rtl819x_HTProc.c
> @@ -276,7 +276,7 @@ void HTConstructCapabilityElement(struct rtllib_device *ieee, u8 *posHTCap,
>  	struct rt_hi_throughput *pHT = ieee->pHTInfo;
>  	struct ht_capab_ele *pCapELE = NULL;
>
> -	if ((posHTCap == NULL) || (pHT == NULL)) {
> +	if ((!posHTCap) || (!pHT)) {

You can drop the parentheses. ! has higher precedenace than ||.

julia

>  		netdev_warn(ieee->dev,
>  			    "%s(): posHTCap and pHTInfo are null\n", __func__);
>  		return;
> @@ -357,7 +357,7 @@ void HTConstructInfoElement(struct rtllib_device *ieee, u8 *posHTInfo,
>  	struct rt_hi_throughput *pHT = ieee->pHTInfo;
>  	struct ht_info_ele *pHTInfoEle = (struct ht_info_ele *)posHTInfo;
>
> -	if ((posHTInfo == NULL) || (pHTInfoEle == NULL)) {
> +	if ((!posHTInfo) || (!pHTInfoEle)) {
>  		netdev_warn(ieee->dev,
>  			    "%s(): posHTInfo and pHTInfoEle are null\n",
>  			    __func__);
> @@ -397,7 +397,7 @@ void HTConstructInfoElement(struct rtllib_device *ieee, u8 *posHTInfo,
>  void HTConstructRT2RTAggElement(struct rtllib_device *ieee, u8 *posRT2RTAgg,
>  				u8 *len)
>  {
> -	if (posRT2RTAgg == NULL) {
> +	if (!posRT2RTAgg) {
>  		netdev_warn(ieee->dev, "%s(): posRT2RTAgg is null\n", __func__);
>  		return;
>  	}
> @@ -420,7 +420,7 @@ static u8 HT_PickMCSRate(struct rtllib_device *ieee, u8 *pOperateMCS)
>  {
>  	u8 i;
>
> -	if (pOperateMCS == NULL) {
> +	if (!pOperateMCS) {
>  		netdev_warn(ieee->dev, "%s(): pOperateMCS is null\n", __func__);
>  		return false;
>  	}
> @@ -453,7 +453,7 @@ u8 HTGetHighestMCSRate(struct rtllib_device *ieee, u8 *pMCSRateSet,
>  	u8		mcsRate = 0;
>  	u8		availableMcsRate[16];
>
> -	if (pMCSRateSet == NULL || pMCSFilter == NULL) {
> +	if (!pMCSRateSet || !pMCSFilter) {
>  		netdev_warn(ieee->dev,
>  			    "%s(): pMCSRateSet and pMCSFilter are null\n",
>  			    __func__);
> --
> 2.30.2
>
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