From: Rajat Jain via iommu <iommu@lists.linux-foundation.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Todd Broch <tbroch@google.com>,
linux-pci <linux-pci@vger.kernel.org>,
"Krishnakumar,
Lalithambika" <lalithambika.krishnakumar@intel.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Diego Rivas <diegorivas@google.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Furquan Shaikh <furquan@google.com>,
Raj Ashok <ashok.raj@intel.com>,
Saravana Kannan <saravanak@google.com>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Christian Kellner <christian@kellner.me>,
Mattias Nissler <mnissler@google.com>,
Jesse Barnes <jsbarnes@google.com>, Len Brown <lenb@kernel.org>,
Rajat Jain <rajatxjain@gmail.com>,
Prashant Malani <pmalani@google.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Aaron Durbin <adurbin@google.com>,
Alex Williamson <alex.williamson@redhat.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Bernie Keany <bernie.keany@intel.com>,
Duncan Laurie <dlaurie@google.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"open list:AMD IOMMU \(AMD-VI\)"
<iommu@lists.linux-foundation.org>, Arnd Bergmann <arnd@arndb.de>,
Oliver O'Halloran <oohall@gmail.com>,
Benson Leung <bleung@google.com>,
David Woodhouse <dwmw2@infradead.org>,
Alex Levin <levinale@google.com>
Subject: Re: [PATCH v2 4/7] PCI: Add device even if driver attach failed
Date: Mon, 6 Jul 2020 16:35:05 -0700 [thread overview]
Message-ID: <CACK8Z6FdWqx5oSXtAtZR7MN_yL0CS5g3yOmGeL5J9sZPHK_MYQ@mail.gmail.com> (raw)
In-Reply-To: <20200630080220.GC619174@kroah.com>
On Tue, Jun 30, 2020 at 1:02 AM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Mon, Jun 29, 2020 at 09:49:40PM -0700, Rajat Jain wrote:
> > device_attach() returning failure indicates a driver error while trying to
> > probe the device. In such a scenario, the PCI device should still be added
> > in the system and be visible to the user.
> >
> > This patch partially reverts:
> > commit ab1a187bba5c ("PCI: Check device_attach() return value always")
> >
> > Signed-off-by: Rajat Jain <rajatja@google.com>
> > Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > ---
> > v2: Cosmetic change in commit log.
> > Add Greg's "reviewed-by"
> >
> > drivers/pci/bus.c | 6 +-----
> > 1 file changed, 1 insertion(+), 5 deletions(-)
> >
> > diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
> > index 8e40b3e6da77d..3cef835b375fd 100644
> > --- a/drivers/pci/bus.c
> > +++ b/drivers/pci/bus.c
> > @@ -322,12 +322,8 @@ void pci_bus_add_device(struct pci_dev *dev)
> >
> > dev->match_driver = true;
> > retval = device_attach(&dev->dev);
> > - if (retval < 0 && retval != -EPROBE_DEFER) {
> > + if (retval < 0 && retval != -EPROBE_DEFER)
> > pci_warn(dev, "device attach failed (%d)\n", retval);
> > - pci_proc_detach_device(dev);
> > - pci_remove_sysfs_dev_files(dev);
> > - return;
> > - }
> >
> > pci_dev_assign_added(dev, true);
> > }
>
> This should go first in the series, and cc: stable and get merged now.
> No need to tie it to this series at all.
>
> Or just an independant patch, it doesn't have much to do with this
> series, it's a bugfix.
Resent this patch as an independent patch with cc:stable here:
https://lore.kernel.org/patchwork/patch/1268456/
Thanks,
Rajat
>
> thanks,
>
> greg k-h
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next prev parent reply other threads:[~2020-07-06 23:35 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-30 4:49 [PATCH v2 0/7] Tighten PCI security, expose dev location in sysfs Rajat Jain via iommu
2020-06-30 4:49 ` [PATCH v2 1/7] PCI: Keep the ACS capability offset in device Rajat Jain via iommu
2020-07-06 15:58 ` Bjorn Helgaas
2020-07-06 22:16 ` Rajat Jain via iommu
2020-07-06 23:18 ` Bjorn Helgaas
2020-06-30 4:49 ` [PATCH v2 2/7] PCI: Set "untrusted" flag for truly external devices only Rajat Jain via iommu
2020-06-30 7:38 ` Lu Baolu
2020-06-30 7:55 ` Greg Kroah-Hartman
2020-07-06 16:41 ` Bjorn Helgaas
2020-07-06 18:48 ` Greg Kroah-Hartman
2020-07-06 16:38 ` Bjorn Helgaas
2020-07-06 22:31 ` Rajat Jain via iommu
2020-07-06 23:30 ` Bjorn Helgaas
2020-07-06 23:40 ` Rajat Jain via iommu
2020-06-30 4:49 ` [PATCH v2 3/7] PCI/ACS: Enable PCI_ACS_TB for untrusted/external-facing devices Rajat Jain via iommu
2020-07-06 16:45 ` Bjorn Helgaas
2020-07-06 23:12 ` Rajat Jain via iommu
2020-07-06 17:07 ` Bjorn Helgaas
2020-07-06 23:19 ` Rajat Jain via iommu
2020-06-30 4:49 ` [PATCH v2 4/7] PCI: Add device even if driver attach failed Rajat Jain via iommu
2020-06-30 8:02 ` Greg Kroah-Hartman
2020-07-06 23:35 ` Rajat Jain via iommu [this message]
2020-06-30 4:49 ` [PATCH v2 5/7] driver core: Add device location to "struct device" and expose it in sysfs Rajat Jain via iommu
2020-06-30 8:01 ` Greg Kroah-Hartman
2020-06-30 10:49 ` Heikki Krogerus
2020-06-30 12:52 ` Greg Kroah-Hartman
2020-06-30 13:00 ` Rafael J. Wysocki
2020-06-30 15:38 ` Greg Kroah-Hartman
2020-06-30 16:08 ` Rafael J. Wysocki
2020-06-30 17:00 ` Greg Kroah-Hartman
2020-07-01 18:06 ` Rajat Jain via iommu
2020-07-02 5:23 ` Oliver O'Halloran
2020-07-02 7:32 ` Greg Kroah-Hartman
2020-07-02 8:40 ` Oliver O'Halloran
2020-07-02 8:52 ` Greg Kroah-Hartman
2020-07-02 8:53 ` Greg Kroah-Hartman
2020-07-07 6:03 ` Rajat Jain via iommu
2020-06-30 17:43 ` Saravana Kannan via iommu
2020-06-30 4:49 ` [PATCH v2 6/7] PCI: Move pci_dev->untrusted logic to use device location instead Rajat Jain via iommu
2020-06-30 7:39 ` Lu Baolu
2020-06-30 4:49 ` [PATCH v2 7/7] PCI: Add parameter to disable attaching external devices Rajat Jain via iommu
2020-07-04 11:44 ` [PATCH v2 0/7] Tighten PCI security, expose dev location in sysfs Pavel Machek
2020-07-06 22:18 ` Rajat Jain via iommu
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