On 2019/3/17 19:26, Greg KH wrote:
> On Sat, Mar 09, 2019 at 11:26:00AM +0800, Mao Wenan wrote:
>> Using is_zero_ether_addr() instead of directly use
>> memcmp() to determine if the ethernet address is all
>> zeros.
>>
>> Signed-off-by: Mao Wenan <maowenan@xxxxxxxxxx>
>> ---
>> drivers/staging/rtl8188eu/core/rtw_mlme.c | 3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c b/drivers/staging/rtl8188eu/core/rtw_mlme.c
>> index 714f7a70ed64..beae367df93b 100644
>> --- a/drivers/staging/rtl8188eu/core/rtw_mlme.c
>> +++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c
>> @@ -180,9 +180,8 @@ struct wlan_network *rtw_find_network(struct __queue *scanned_queue, u8 *addr)
>> {
>> struct list_head *phead, *plist;
>> struct wlan_network *pnetwork = NULL;
>> - u8 zero_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
>>
>> - if (!memcmp(zero_addr, addr, ETH_ALEN)) {
>> + if (is_zero_ether_addr(addr)) {
>
> As Joe said, you have to prove that this is properly aligned before you
> can call this function. Please do so.
The previous function to call rtw_find_network(), has been aligned for parameter 'addr',
because it has been defined an arry[6];
such as unsigned char MacAddress[ETH_ALEN] in struct wlan_bssid_ex;
179 struct wlan_bssid_ex {
180 u32 Length;
181 unsigned char MacAddress[ETH_ALEN];
182 u8 Reserved[2];/* 0]: IS beacon frame */
183 struct ndis_802_11_ssid ssid;
184 u32 Privacy;
185 NDIS_802_11_RSSI Rssi;/* in dBM,raw data ,get from PHY) */
186 enum NDIS_802_11_NETWORK_TYPE NetworkTypeInUse;
187 struct ndis_802_11_config Configuration;
188 enum ndis_802_11_network_infra InfrastructureMode;
189 unsigned char SupportedRates[NDIS_802_11_LENGTH_RATES_EX];
190 struct wlan_phy_info PhyInfo;
191 u32 ie_length;
192 u8 ies[MAX_IE_SZ]; /* timestamp, beacon interval, and
193 * capability information)
194 */
195 } __packed;
rtw_survey_event_callback->rtw_find_network(&pmlmepriv->scanned_queue, pnetwork->MacAddress);
struct wlan_bssid_ex *pnetwork;
>
> thanks,
>
> greg k-h
>
> .
>
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