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Re: [V4,1/3] brcmfmac: add support multi-scheduled scan

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On 07-06-17 16:53, Kalle Valo wrote:
> Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx> writes:
> 
>> On 5/22/2017 5:16 PM, Kalle Valo wrote:
>>> Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx> wrote:
>>>> From: Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx>
>>>>
>>>> This change adds support for multi-scheduled scan in the driver. It
>>>> currently relies on g-scan support in firmware and will set struct
>>>> wiphy::max_sched_scan_reqs accordingly. This is limited to 16 concurrent
>>>> requests.
>>>>
>>>> The firmware currently has a limit of 64 channels that can be configured
>>>> for all requests in total regardless whether there are duplicates. So if
>>>> a request uses 35 channels there are 29 channels left for another request.
>>>> When user-space does not specify any channels cfg80211 will add all
>>>> channels defined by the wiphy instance to the request, which makes
>>>> reaching the limit rather easy for dual-band devices.
>>>>
>>>> Reviewed-by: Hante Meuleman <hante.meuleman@xxxxxxxxxxxx>
>>>> Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@xxxxxxxxxxxx>
>>>> Reviewed-by: Franky Lin <franky.lin@xxxxxxxxxxxx>
>>>> Signed-off-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
>>>
>>> I see new warnings:
>>>
>>> drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c: In function ‘brcmf_pno_config_sched_scans’:
>>> drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c:166:6: warning: ‘mac_mask’ may be used uninitialized in this function [-Wmaybe-uninitialized]
>>>    u8 *mac_mask;
>>>        ^
>>> drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c:183:2: warning: ‘mac_addr’ may be used uninitialized in this function [-Wmaybe-uninitialized]
>>>    memcpy(pfn_mac.mac, mac_addr, ETH_ALEN);
>>>    ^
>>> drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c:165:6: note: ‘mac_addr’ was declared here
>>>    u8 *mac_addr;
>>>        ^
>>>
>>> 3 patches set to Changes Requested.
>>>
>>> 9736151 [V4,1/3] brcmfmac: add support multi-scheduled scan
>>> 9736147 [V4,2/3] brcmfmac: add mutex to protect pno requests
>>> 9736149 [V4,3/3] brcmfmac: add scheduled scan support for specified BSSIDs
>>
>> Not seeing it here using gcc version 4.8.4 (Ubuntu
>> 4.8.4-2ubuntu1~14.04.3).
> 
> My version is:
> 
> gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
> 
> I don't think that's really exocit version of the compiler, or is it?

Nope.

>> Also tried using W=1 on the make command
>> line. Getting a bunck of other warnings, but not the ones above.
> 
> This was without W=1, just a default compilation with all wireless
> drivers enabled.
> 
>> Do you want me to fix it?
> 
> Yes, please. I try to keep the patches warning free, even if they are
> false warnings.

Will do. And thanks again for the reminder ;-)

Regards,
Arend



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