Re: [PATCH v8 6/9] scsi: ibmvfc: extend channel reg/dereg helpers for async sub-CRQ

[Tyrel Datwyler <tyreld@linux.ibm.com>]

On 9/9/26 12:08 PM, Dave Marquardt via B4 Relay wrote:
> From: Dave Marquardt <davemarq@linux.ibm.com>
> 
> ibmvfc_register_channel() and ibmvfc_deregister_channel() previously only
> handled indexed sub-CRQ channels drawn from the channels->scrqs[] array.
> The async sub-CRQ (vhost->async_sub_crq) had no registration path through
> these helpers, requiring separate handling.
> 
> Extend both functions to accept a negative index as a sentinel value
> signalling that the async sub-CRQ should be operated on instead of an
> indexed scrq entry. When index < 0, the queue pointer is set to
> &vhost->async_sub_crq, the IRQ is named "ibmvfc-<addr>-async", and the
> handler is set to ibmvfc_interrupt_async_subq rather than the per-protocol
> ibmvfc_interrupt_mq handler. hwq_id assignment is skipped for the async
> queue since it has no meaningful hardware queue index.
> 
> Stopped marking ibmvfc_interrupt_async_subq as __maybe_unused.
> 
> Error messages in both paths are updated to distinguish async sub-CRQ
> failures from indexed sub-CRQ failures. Kernel-doc headers are added to
> both functions documenting the negative-index convention.
> 
> Signed-off-by: Dave Marquardt <davemarq@linux.ibm.com>
> ---
Acked-by: Tyrel Datwyler <tyreld@linux.ibm.com>