Re: [PATCH 1/6] scsi: libsas: Add sas_task_find_rq()

[John Garry]

On 28/09/2022 14:17, Johannes Thumshirn wrote:
> > +static inline struct request *sas_task_find_rq(struct sas_task *task)
> > +{
> > +	struct scsi_cmnd *scmd;
> > +
> > +	if (!task || !task->uldd_task)
> > +		return NULL;
> Is anyone actually calling sas_task_find_rq with a NULL task?

Yeah, unfortunately. An example - the only one I think - is in the 
pm8001 driver: pm8001_ccb_alloc() function which takes a task pointer 
which may be NULL, and this function calls sas_task_find_rq()

> That doesn't make a lot of sense from an API POV for me, having
> the only argument allowed to be NULL (and not being a *free()
> kind of function).

I suppose that I could change to only call sas_task_find_rq() for 
non-NULL sas_task pointers (and remove the task check).

Thanks,
John