| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 05/50] PCI: Add device even if driver attach failed | Date | Tue, 1 Dec 2020 09:53:04 +0100 |
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From: Rajat Jain <rajatja@google.com>
commit 2194bc7c39610be7cabe7456c5f63a570604f015 upstream.
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.
When device_attach() fails, merely warn about it and keep the PCI device in the system.
This partially reverts ab1a187bba5c ("PCI: Check device_attach() return value always").
Link: https://lore.kernel.org/r/20200706233240.3245512-1-rajatja@google.com Signed-off-by: Rajat Jain <rajatja@google.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: stable@vger.kernel.org # v4.6+ [sudip: use dev_warn] Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/pci/bus.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
--- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -324,12 +324,8 @@ void pci_bus_add_device(struct pci_dev * dev->match_driver = true; retval = device_attach(&dev->dev); - if (retval < 0 && retval != -EPROBE_DEFER) { + if (retval < 0 && retval != -EPROBE_DEFER) dev_warn(&dev->dev, "device attach failed (%d)\n", retval); - pci_proc_detach_device(dev); - pci_remove_sysfs_dev_files(dev); - return; - } dev->is_added = 1; }
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