From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Jason Cooper <jason@lakedaemon.net>,
Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org
Subject: Re: [PATCH RESEND] PCI: mvebu: Dynamically detect if the PEX link is up to enable hot plug
Date: Thu, 3 Oct 2013 14:44:57 +0200 [thread overview]
Message-ID: <20131003144457.4131aea3@skate> (raw)
In-Reply-To: <1380650281-16175-1-git-send-email-jgunthorpe@obsidianresearch.com>
Dear Jason Gunthorpe,
On Tue, 1 Oct 2013 11:58:00 -0600, Jason Gunthorpe wrote:
> Otherwise hotplugging the PEX doesn't work at all since the driver
> detects the link state at probe time. Simply replacing the two tests
> of haslink with a register read is enough to fix it.
>
> Tested on kirkwood with repeated plug/unplug of the link partner.
>
> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
--
Thomas Petazzoni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: thomas.petazzoni@free-electrons.com (Thomas Petazzoni)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH RESEND] PCI: mvebu: Dynamically detect if the PEX link is up to enable hot plug
Date: Thu, 3 Oct 2013 14:44:57 +0200 [thread overview]
Message-ID: <20131003144457.4131aea3@skate> (raw)
In-Reply-To: <1380650281-16175-1-git-send-email-jgunthorpe@obsidianresearch.com>
Dear Jason Gunthorpe,
On Tue, 1 Oct 2013 11:58:00 -0600, Jason Gunthorpe wrote:
> Otherwise hotplugging the PEX doesn't work at all since the driver
> detects the link state at probe time. Simply replacing the two tests
> of haslink with a register read is enough to fix it.
>
> Tested on kirkwood with repeated plug/unplug of the link partner.
>
> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
--
Thomas Petazzoni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2013-10-03 12:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-01 17:58 [PATCH RESEND] PCI: mvebu: Dynamically detect if the PEX link is up to enable hot plug Jason Gunthorpe
2013-10-01 17:58 ` Jason Gunthorpe
2013-10-01 17:58 ` [PATCH RESEND] PCI: mvebu - Support a bridge with no IO port window Jason Gunthorpe
2013-10-01 17:58 ` Jason Gunthorpe
2013-10-03 12:06 ` Thomas Petazzoni
2013-10-03 12:06 ` Thomas Petazzoni
2013-10-15 19:51 ` Jason Gunthorpe
2013-10-15 19:51 ` Jason Gunthorpe
2013-10-03 12:44 ` Thomas Petazzoni [this message]
2013-10-03 12:44 ` [PATCH RESEND] PCI: mvebu: Dynamically detect if the PEX link is up to enable hot plug Thomas Petazzoni
2013-10-07 22:28 ` Bjorn Helgaas
2013-10-07 22:28 ` Bjorn Helgaas
2013-10-07 22:40 ` Jason Gunthorpe
2013-10-07 22:40 ` Jason Gunthorpe
2013-10-07 22:51 ` Bjorn Helgaas
2013-10-07 22:51 ` Bjorn Helgaas
2013-10-08 7:32 ` Thomas Petazzoni
2013-10-08 7:32 ` Thomas Petazzoni
2013-10-08 11:57 ` Jason Cooper
2013-10-08 11:57 ` Jason Cooper
2013-10-08 16:54 ` Jason Cooper
2013-10-08 16:54 ` Jason Cooper
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