From: Rajat Jain via iommu <iommu@lists.linux-foundation.org>
To: David Woodhouse <dwmw2@infradead.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
Bjorn Helgaas <bhelgaas@google.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org,
Raj Ashok <ashok.raj@intel.com>,
lalithambika.krishnakumar@intel.com,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Prashant Malani <pmalani@google.com>,
Benson Leung <bleung@google.com>, Todd Broch <tbroch@google.com>,
Alex Levin <levinale@google.com>,
Mattias Nissler <mnissler@google.com>,
Rajat Jain <rajatxjain@gmail.com>,
Bernie Keany <bernie.keany@intel.com>,
Aaron Durbin <adurbin@google.com>,
Diego Rivas <diegorivas@google.com>,
Duncan Laurie <dlaurie@google.com>,
Furquan Shaikh <furquan@google.com>,
Jesse Barnes <jsbarnes@google.com>,
Christian Kellner <christian@kellner.me>,
Alex Williamson <alex.williamson@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
oohall@gmail.com, Saravana Kannan <saravanak@google.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Arnd Bergmann <arnd@arndb.de>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Rajat Jain <rajatja@google.com>
Subject: [PATCH v2 4/7] PCI: Add device even if driver attach failed
Date: Mon, 29 Jun 2020 21:49:40 -0700 [thread overview]
Message-ID: <20200630044943.3425049-5-rajatja@google.com> (raw)
In-Reply-To: <20200630044943.3425049-1-rajatja@google.com>
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);
}
--
2.27.0.212.ge8ba1cc988-goog
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next prev parent reply other threads:[~2020-06-30 4:50 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 ` Rajat Jain via iommu [this message]
2020-06-30 8:02 ` [PATCH v2 4/7] PCI: Add device even if driver attach failed Greg Kroah-Hartman
2020-07-06 23:35 ` Rajat Jain via iommu
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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