Re: [PATCH net v2] bnxt_en: Gate TPH enablement behind BNXT_SUPPORTS_QUEUE_API check

[Pavan Chebbi]

On Fri, Aug 21, 2026 at 3:36 AM Thomas Walsh <thwalsh@xxxxxxxxxx> wrote:
>
> In bnxt_request_irq(), pcie_enable_tph() is called unconditionally to
> enable PCIe TPH when setting up interrupts.
>
> If the NIC hardware or firmware capabilities do not support queue ops,
> attempting to enable TPH during bnxt_request_irq() is unnecessary.
>
> As a result a flood of "RX queue restart failed: err=-95"  messages is
> seen upon boot.
>
> Older NICs (pre-Thor / BCM57414) do not support TPH or queue management.
> TPH requires queue management to restart the queue.  NICs that support
> queue management (with updated FW) all support TPH.
>
> Gate the call to pcie_enable_tph() and setting of bp->tph_mode
> behind BNXT_SUPPORTS_QUEUE_API(bp) to ensure TPH is only initialized
> on devices capable of supporting queue ops. This prevents a guaranteed
> -EOPNOTSUPP error from occurring due to NULL operations.
>
> Fixes: 1410c7416dc3 ("eth: bnxt: always set the queue mgmt ops")
> Suggested-by: Michal Schmidt <mschmidt@xxxxxxxxxx>
> Signed-off-by: Thomas Walsh <thwalsh@xxxxxxxxxx>
> Reviewed-by: Michael Chan <michael.chan@xxxxxxxxxxxx>
> ---
> v2:
>  - Updated commit message to include context on hardware support
>    and added Michael Chan's Reviewed-by tag.
>  - Rebased onto net/main.
>

OK with the consensus.
Reviewed-by: Pavan Chebbi <pavan.chebbi@xxxxxxxxxxxx>

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