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Message-ID: <a586bc5f-d7af-c1cc-8213-b63639061947@huawei.com>
Date: Tue, 28 Apr 2020 20:39:50 +0800
From: Jason Yan <yanaijie@...wei.com>
To: Greg KH <gregkh@...uxfoundation.org>
CC: <wambui.karugax@...il.com>, <devel@...verdev.osuosl.org>,
<linux-kernel@...r.kernel.org>, Hulk Robot <hulkci@...wei.com>
Subject: Re: [PATCH 2/7] staging: rtl8723bs: os_dep: remove set but not used
'size'
在 2020/4/28 20:28, Greg KH 写道:
> On Mon, Apr 27, 2020 at 11:23:37AM +0800, Jason Yan wrote:
>> And also remove the NULL check before kfree() because kfree() can handle
>> NULL pointers correctly.
>>
>> Fix the following gcc warning:
>>
>> drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:157:6: warning:
>> variable ‘size’ set but not used [-Wunused-but-set-variable]
>> u32 size = 0;
>> ^~~~
>>
>> Reported-by: Hulk Robot <hulkci@...wei.com>
>> Signed-off-by: Jason Yan <yanaijie@...wei.com>
>> ---
>> drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c | 11 -----------
>> 1 file changed, 11 deletions(-)
>>
>> diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
>> index 1ba85a43f05a..b037868fbf22 100644
>> --- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
>> +++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
>> @@ -154,17 +154,6 @@ static struct ieee80211_supported_band *rtw_spt_band_alloc(
>>
>> static void rtw_spt_band_free(struct ieee80211_supported_band *spt_band)
>> {
>> - u32 size = 0;
>> -
>> - if (!spt_band)
>> - return;
>> -
>> - if (spt_band->band == NL80211_BAND_2GHZ)
>> - {
>> - size = sizeof(struct ieee80211_supported_band)
>> - + sizeof(struct ieee80211_channel)*RTW_2G_CHANNELS_NUM
>> - + sizeof(struct ieee80211_rate)*RTW_G_RATES_NUM;
>> - }
>> kfree(spt_band);
>> }
>
> This function can now be removed and replaced with the call to kfree(),
> right? Can you send a follow-on patch to do that?
>
Sure.
> thanks,
>
> greg k-h
>
> .
>
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