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Date: Tue, 14 Apr 2026 17:13:36 +0200
From: Lukas Wunner <lukas@wunner.de>
To: Emil Tantilov <emil.s.tantilov@intel.com>
Cc: intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
	przemyslaw.kitszel@intel.com, jay.bhat@intel.com,
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	linux-pci@vger.kernel.org, madhu.chittim@intel.com,
	decot@google.com, willemb@google.com, sheenamo@google.com
Subject: Re: [PATCH iwl-next v2 2/2] idpf: implement pci error handlers
Message-ID: <ad5ZoDCuSsPW0lKo@wunner.de>
References: <20260414031631.2107-1-emil.s.tantilov@intel.com>
 <20260414031631.2107-3-emil.s.tantilov@intel.com>
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In-Reply-To: <20260414031631.2107-3-emil.s.tantilov@intel.com>

On Mon, Apr 13, 2026 at 08:16:31PM -0700, Emil Tantilov wrote:
> +static pci_ers_result_t
> +idpf_pci_err_slot_reset(struct pci_dev *pdev)
> +{
> +	struct idpf_adapter *adapter = pci_get_drvdata(pdev);
> +
> +	pci_restore_state(pdev);
> +	pci_set_master(pdev);
> +	pci_wake_from_d3(pdev, false);
> +	if (readl(adapter->reset_reg.rstat) != 0xFFFFFFFF)
> +		return PCI_ERS_RESULT_RECOVERED;

FWIW, there's a PCI_POSSIBLE_ERROR() helper that you may find useful
to check for an "all ones" MMIO read.

Thanks,

Lukas