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Date:   Thu, 28 Feb 2019 07:31:57 +0100
From:   Lukas Wunner <>
To:     Alexandru Gagniuc <>
        "Rafael J. Wysocki" <>,
        Oza Pawandeep <>,
        Mika Westerberg <>,
        Benjamin Young <>,
        Frederick Lawler <>,,
Subject: Re: [PATCH v3] PCI: portdrv: Report degraded links via link
 bandwidth notification

On Wed, Feb 27, 2019 at 02:58:17PM -0600, Alexandru Gagniuc wrote:
> A warning is generated when a PCIe device is probed with a degraded
> link, but there was no similar mechanism to warn when the link becomes
> degraded after probing. The Link Bandwidth Notification provides this
> mechanism.
> Use the link bandwidth notification interrupt to detect bandwidth
> changes, and rescan the bandwidth, looking for the weakest point. This
> is the same logic used in probe().
> Signed-off-by: Alexandru Gagniuc <>

Reviewed-by: Lukas Wunner <>

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