[PATCH ath-next v4 4/8] wifi: ath12k: add device DP stats reset support via debugfs

[Pardeep Kaur]

On 23-09-2026 05:42, Jeff Johnson wrote:
> On 8/18/2026 10:32 PM, Pardeep Kaur wrote:
>> From: Hariharan Ramanathan <hariharan.ramanathan at oss.qualcomm.com>
>>
>> There is no way to reset device DP stats counters without reloading
>> the driver, making it difficult to isolate issues to a specific time
>> window during debugging.
>>
>> Add a write handler to the device_dp_stats debugfs file so that
>> writing 'reset' clears all device DP stats counters. Change the file
>> mode from 0400 to 0600 to allow write access. Use
>> simple_write_to_buffer() to correctly handle partial writes and
>> non-zero ppos, consistent with ath12k_write_simulate_fw_crash() in
> in what? the last sentence seems to be truncated. Or perhaps just s/ in$/./?
> if there are no other comments in the thread there is no need to repost just
> for this. Instead just let me know what text you really want here.
debugfs.c.
>> No lock is taken around the memset since the counters are updated
>> locklessly in the datapath; taking dp_lock would be misleading as it
>> does not protect device_stats updates.
>>
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6.r1-00402-QCAHKSWPL_SILICONZ-1
>>
>> Signed-off-by: Hariharan Ramanathan <hariharan.ramanathan at oss.qualcomm.com>
>> Co-developed-by: Pardeep Kaur <pardeep.kaur at oss.qualcomm.com>
>> Signed-off-by: Pardeep Kaur <pardeep.kaur at oss.qualcomm.com>