linux-kernel - Re: [PATCH] PCI: Add quirk to disable ASPM L1 for Sandisk SN740 NVMe SSDs

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Message-ID: <aR88DxZST5r9Va2S@wunner.de>
Date: Thu, 20 Nov 2025 17:04:31 +0100
From: Lukas Wunner <lukas@...ner.de>
To: Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
Cc: bhelgaas@...gle.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Manivannan Sadhasivam <mani@...nel.org>,
	Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH] PCI: Add quirk to disable ASPM L1 for Sandisk SN740 NVMe
 SSDs

On Thu, Nov 20, 2025 at 09:16:01PM +0530, Manivannan Sadhasivam wrote:
> +++ b/drivers/pci/quirks.c
> @@ -2525,6 +2525,18 @@ static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
>   */
>  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1);
>  
> +static void quirk_disable_aspm_l1(struct pci_dev *dev)
> +{
> +       pci_info(dev, "Disabling ASPM L1\n");
> +       pci_disable_link_state(dev, PCIE_LINK_STATE_L1);
> +}

Shouldn't this be using pcie_aspm_remove_cap()?  Existing quirks
were converted to this new helper with 30579eebba6a.

Thanks,

Lukas