Re: [PATCH v3 3/3] scsi: ufs: Fix wrong Task Tag used in task management request UPIUs

[Bart Van Assche]

On 2/4/21 10:09 PM, Can Guo wrote:
> That code is wrong. The Task Tag in Dword_0 should be the real tag we
> allocated for TMR. The transfer request Task Tag which we are trying to
> abort is given in Dword_5, which is the Input Parameter 3 of the TMR UPIU.
> I am not sure why the author gave hba->nutrs + req->tag as the Task Tag
> of one TMR, the commit msg abot this part is not quite informative....
> 
> Table 10.22 — Task Management Request UPIU
> TASK MANAGEMENT REQUEST UPIU
> ----------------------------------
> |0         |1      |2   |3       |
> ----------------------------------
> |xx00 0100b| Flags |LUN |Task Tag|
> ----------------------------------
> ...
> 16 (MSB)   |17     |18  |19 (LSB)|
> ----------------------------------
> Input Parameter 2
> ----------------------------------
> 
> Table 10.24 — Task Management Input Parameters
> Field Description
> Input Parameter 2 LSB: Task Tag of the task/command operated by the task
> management function.

Thanks for the clarification. Feel free to add the following to this patch:

Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>