Re: [PATCH v6 03/17] iommu: Convert gdev->blocked from bool to enum blocked_reason

[sashiko-bot@kernel.org]

> The gdev->blocked flag tracks whether a device is individually being held
> in the group->blocking_domain while group->domain is retained. Up to now,
> a PCI reset in flight is the only producer, so a bool suffices.
> 
> Subsequent changes will add more reasons to keep a device blocked, e.g. a
> failed-reset case that must not auto-unblock, or a driver-side quarantine
> for a hardware fault. These reasons are cleared by different events, which
> a single bool cannot encode.
> 
> Convert the "bool blocked" into "enum blocked_reason blocked", provisioned
> with two initial values: BLOCKED_NONE and BLOCKED_RESETTING, covering the
> existing use cases. All readers keep the "if (gdev->blocked)" form, since
> BLOCKED_NONE == 0.
> 
> This is a pure type change with no behavior change. Follow-on changes will
> add new enum values along with their producers.
> 
> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
> Assisted-by: LLM
> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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