From: Niklas Cassel <cassel@kernel.org>
To: manivannan.sadhasivam@oss.qualcomm.com
Cc: "Jingoo Han" <jingoohan1@gmail.com>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
vincent.guittot@linaro.org, zhangsenchuan@eswincomputing.com,
"Shawn Lin" <shawn.lin@rock-chips.com>,
"Richard Zhu" <hongxing.zhu@nxp.com>
Subject: Re: [PATCH v4 5/5] PCI: dwc: Fail dw_pcie_host_init() if dw_pcie_wait_for_link() returns -ETIMEDOUT
Date: Wed, 21 Jan 2026 09:24:09 +0100 [thread overview]
Message-ID: <aXCNKeebHq-YUUXR@ryzen> (raw)
In-Reply-To: <20260120-pci-dwc-suspend-rework-v4-5-2f32d5082549@oss.qualcomm.com>
On Tue, Jan 20, 2026 at 11:17:44PM +0530, Manivannan Sadhasivam via B4 Relay wrote:
> From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
>
> The dw_pcie_wait_for_link() API now distinguishes link failures more
> precisely:
>
> -ENODEV: Device not found on the bus.
> -EIO: Device found but inactive.
> -ETIMEDOUT: Link failed to come up.
>
> Out of these three errors, only -ETIMEDOUT represents a definitive link
> failure since it signals that something is wrong with the link. For the
> other two errors, there is a possibility that the link might come up later.
> So fail dw_pcie_host_init() if -ETIMEDOUT is returned and skip the failure
> otherwise.
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
> ---
Reviewed-by: Niklas Cassel <cassel@kernel.org>
next prev parent reply other threads:[~2026-01-21 8:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-20 17:47 [PATCH v4 0/5] PCI: dwc: Rework the error handling of dw_pcie_wait_for_link() API Manivannan Sadhasivam
2026-01-20 17:47 ` Manivannan Sadhasivam via B4 Relay
2026-01-20 17:47 ` [PATCH v4 1/5] PCI: dwc: Return -ENODEV from dw_pcie_wait_for_link() if device is not found Manivannan Sadhasivam
2026-01-20 17:47 ` Manivannan Sadhasivam via B4 Relay
2026-01-21 8:22 ` Niklas Cassel
2026-01-20 17:47 ` [PATCH v4 2/5] PCI: dwc: Return -EIO from dw_pcie_wait_for_link() if device is not active Manivannan Sadhasivam
2026-01-20 17:47 ` Manivannan Sadhasivam via B4 Relay
2026-01-21 8:23 ` Niklas Cassel
2026-01-21 9:13 ` Manivannan Sadhasivam
2026-01-20 17:47 ` [PATCH v4 3/5] PCI: dwc: Rename and move ltssm_status_string() to pcie-designware.c Manivannan Sadhasivam
2026-01-20 17:47 ` Manivannan Sadhasivam via B4 Relay
2026-01-21 8:23 ` Niklas Cassel
2026-01-20 17:47 ` [PATCH v4 4/5] PCI: dwc: Rework the error print of dw_pcie_wait_for_link() Manivannan Sadhasivam
2026-01-20 17:47 ` Manivannan Sadhasivam via B4 Relay
2026-01-21 8:23 ` Niklas Cassel
2026-01-21 9:13 ` Manivannan Sadhasivam
2026-01-20 17:47 ` [PATCH v4 5/5] PCI: dwc: Fail dw_pcie_host_init() if dw_pcie_wait_for_link() returns -ETIMEDOUT Manivannan Sadhasivam
2026-01-20 17:47 ` Manivannan Sadhasivam via B4 Relay
2026-01-21 8:24 ` Niklas Cassel [this message]
2026-01-21 9:21 ` [PATCH v4 0/5] PCI: dwc: Rework the error handling of dw_pcie_wait_for_link() API Manivannan Sadhasivam
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