From: Lukas Wunner <lukas@wunner.de>
To: Ricky WU <ricky_wu@realtek.com>
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
Kees Cook <keescook@chromium.org>,
Tony Luck <tony.luck@intel.com>,
"Guilherme G. Piccoli" <gpiccoli@igalia.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] PCI: pciehp: Prevent child devices from doing RPM on PCIe Link Down
Date: Tue, 17 Oct 2023 09:10:14 +0200 [thread overview]
Message-ID: <20231017071014.GA4592@wunner.de> (raw)
In-Reply-To: <24f72eea9fba45c4b1cd85836b17f251@realtek.com>
[cc -= unrelated mailing lists bpf, kernel-hardening]
On Tue, Oct 17, 2023 at 05:44:13AM +0000, Ricky WU wrote:
> > From: Kai-Heng Feng <kai.heng.feng@canonical.com>
> > On Mon, Oct 16, 2023 at 5:32???PM Lukas Wunner <lukas@wunner.de> wrote:
> > > On Mon, Oct 16, 2023 at 12:01:31PM +0800, Kai-Heng Feng wrote:
> > > > When inserting an SD7.0 card to Realtek card reader, it can trigger
> > > > PCI slot Link down and causes the following error:
> > >
> > > Why does *inserting* a card cause a Link Down?
> >
> > Ricky, do you know the reason why Link Down happens?
>
> Because SD7.0 card is use pcie-nvme driver, reader need to re-link
> then just do the pcie channel
I don't quite follow. I don't see a pcie-nvme driver in Linus'
current master branch. Which driver are you referring to?
What does "re-link" mean? Rebind to a different driver?
Thanks,
Lukas
next prev parent reply other threads:[~2023-10-17 7:10 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-16 4:01 [PATCH] PCI: pciehp: Prevent child devices from doing RPM on PCIe Link Down Kai-Heng Feng
2023-10-16 9:32 ` Lukas Wunner
2023-10-17 4:35 ` Kai-Heng Feng
2023-10-17 5:44 ` Ricky WU
2023-10-17 7:10 ` Lukas Wunner [this message]
2023-10-17 7:13 ` Lukas Wunner
2023-10-17 10:25 ` Ricky WU
2023-10-18 9:44 ` Lukas Wunner
2023-10-19 1:49 ` Ricky WU
2023-10-19 14:35 ` Lukas Wunner
2023-11-08 10:29 ` Kai-Heng Feng
2023-11-10 2:26 ` Ricky WU
2023-11-10 2:41 ` Ricky WU
2023-11-16 5:22 ` Kai-Heng Feng
2023-11-29 2:11 ` Ricky WU
-- strict thread matches above, loose matches on Subject: below --
2023-10-17 12:07 kernel test robot
2023-10-19 1:06 ` kernel test robot
2023-10-22 10:34 kernel test robot
2023-10-23 2:16 ` Liu, Yujie
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