From: sashiko-bot@kernel.org
To: "Mrinmay Sarkar" <mrinmay.sarkar@oss.qualcomm.com>
Cc: linux-pci@vger.kernel.org
Subject: Re: [PATCH 2/2] PCI: qcom: Reinitialize MSI on resume for firmware-managed controllers
Date: Fri, 16 Oct 2026 13:05:22 +0000 [thread overview]
Message-ID: <sashiko-outbox-174366@kernel.org> (raw)
In-Reply-To: <20261016-pcie-controller-reset-v1-2-51779736cf12@oss.qualcomm.com>
> On firmware-managed PCIe controllers, hardware context is lost across
> system suspend. While firmware reinitializes the controller through the
> power domain framework during resume, the DesignWare MSI registers are
> not preserved across the power cycle and must be reprogrammed by the
> driver.
>
> Retrieve the DesignWare PCIe context and reinitialize MSI state during
> the resume path for firmware-managed controllers to restore MSI
> functionality after resume.
>
> Signed-off-by: Mrinmay Sarkar <mrinmay.sarkar@oss.qualcomm.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261016-pcie-controller-reset-v1-0-51779736cf12@oss.qualcomm.com?part=2
prev parent reply other threads:[~2026-10-16 13:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-16 12:57 [PATCH 0/2] PCI: qcom: Add support for firmware-managed PCIe controller recovery Mrinmay Sarkar
2026-10-16 12:57 ` [PATCH 1/2] PCI: qcom: Implement .reset_root_port() for firmware-managed controllers Mrinmay Sarkar
2026-10-16 13:13 ` sashiko-bot
2026-10-16 12:57 ` [PATCH 2/2] PCI: qcom: Reinitialize MSI on resume " Mrinmay Sarkar
2026-10-16 13:05 ` sashiko-bot [this message]
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