From: lukas@wunner.de (Lukas Wunner)
To: linux-arm-kernel@lists.infradead.org
Subject: Possible regression between 4.9 and 4.13
Date: Tue, 29 Aug 2017 15:38:52 +0200 [thread overview]
Message-ID: <20170829133852.GA13355@wunner.de> (raw)
In-Reply-To: <59A56C15.2000403@linux.intel.com>
On Tue, Aug 29, 2017 at 04:28:53PM +0300, Mathias Nyman wrote:
> Then again it might be a bit too drastic to kill xhci just because
> we read 0xffffffff once from a mmio xhci register. Maybe we should
> return an error a couple times before actually tearing down xhci.
>
> This tight check was originally done to detect pci hotplug removed
> hosts as soon as possible.
Just make pci_dev_is_disconnected() public to detect PCI hot removal.
We *know* when the device was hot removed, so I think there's no need
to guess that based on reading "all ones" from mmio (which may happen
for entirely legitimate reasons unrelated to hot removal).
Thanks,
Lukas
next prev parent reply other threads:[~2017-08-29 13:38 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-22 17:34 Possible regression between 4.9 and 4.13 Mason
2017-08-23 6:07 ` Felipe Balbi
2017-08-23 7:51 ` Mathias Nyman
2017-08-23 9:18 ` Mason
2017-08-23 9:31 ` Mason
2017-08-23 11:11 ` Mathias Nyman
2017-08-23 11:54 ` Mason
2017-08-23 12:41 ` Mason
2017-08-23 14:30 ` Mason
2017-08-28 8:39 ` Mathias Nyman
2017-08-28 14:40 ` Mason
2017-08-29 13:28 ` Mathias Nyman
2017-08-29 13:38 ` Lukas Wunner [this message]
2017-08-29 14:47 ` Greg Kroah-Hartman
2017-08-29 15:34 ` Lukas Wunner
2017-08-29 15:51 ` Greg Kroah-Hartman
2017-08-30 6:36 ` Lukas Wunner
2017-08-30 6:45 ` Greg Kroah-Hartman
2017-08-29 23:53 ` Lukas Wunner
2017-08-30 6:02 ` Greg Kroah-Hartman
2017-08-30 8:55 ` Mason
2017-08-30 9:06 ` Greg Kroah-Hartman
2017-08-31 9:39 ` Mason
2017-08-31 11:40 ` Mathias Nyman
2017-08-30 9:07 ` Ard Biesheuvel
2017-08-30 9:22 ` Greg Kroah-Hartman
2017-08-30 9:37 ` Mason
2017-08-31 9:17 ` Mason
2017-08-31 11:38 ` Mathias Nyman
2017-08-23 10:19 ` Mason
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