[PATCHv2] wifi: ath12k: Avoid napi_sync before napi_enable

Jeff Johnson jeff.johnson at oss.qualcomm.com
Thu Jan 30 07:05:57 PST 2025


On 1/24/2025 8:55 PM, Aditya Kumar Singh wrote:
> On 1/24/25 14:30, Tamizh Chelvam Raja wrote:
>> From: Avula Sri Charan <quic_asrichar at quicinc.com>
>>
>> In case of MHI error a reset work will be queued
>> which will try napi_disable after napi_synchronize.
> 
> nit: always better to refer function name with () at end. I guess Jeff 
> can fix in pending?

I fixed this, as well as did some other grammar & formatting fixes.

Please check:
https://git.kernel.org/pub/scm/linux/kernel/git/ath/ath.git/commit/?h=pending&id=a644c8784220b7d5dd0a10a45c5e6779605778a5

> 
>>
>> As the napi will be only enabled after qmi_firmware_ready
>> event trying napi_synchronize before napi_enable will
>> result in indefinite sleep in case of a firmware crash
>> in QMI init sequence.
>>
>> To avoid this introduce napi_enabled flag to check
>> if napi is enabled or not before calling napi_synchronize.
>>
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
>>
>> Signed-off-by: Avula Sri Charan <quic_asrichar at quicinc.com>
>> Signed-off-by: Tamizh Chelvam Raja <quic_tamizhr at quicinc.com>
>> ---
> 
> Reviewed-by: Aditya Kumar Singh <aditya.kumar.singh at oss.qualcomm.com>
> 




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