RE: [PATCH] driver core: platform: add device binding path 'driver_override'

[Stuart Yoder <stuart.yoder@freescale.com>]

> -----Original Message-----
> From: Kim Phillips [mailto:kim.phillips@freescale.com]
> Sent: Tuesday, April 08, 2014 8:47 PM
> To: Alex Williamson; gregkh@linuxfoundation.org
> Cc: bhelgaas@google.com; linux-pci@vger.kernel.org; kvm@vger.kernel.org;
> konrad.wilk@oracle.com; Yoder Stuart-B08248; libvir-list@redhat.com;
> iommu@lists.linux-foundation.org; tech@virtualopensystems.com;
> kvmarm@lists.cs.columbia.edu; linux-kernel@vger.kernel.org; Guenter
> Roeck; christoffer.dall@linaro.org
> Subject: [PATCH] driver core: platform: add device binding path
> 'driver_override'
> 
> Needed by platform device drivers, such as the vfio-platform driver [1],
> in order to bypass the existing OF, ACPI, id_table and name string
> matches,
> and successfully be able to be bound to any device, like so:
> 
> echo vfio-platform >
> /sys/bus/platform/devices/fff51000.ethernet/driver_override
> echo fff51000.ethernet >
> /sys/bus/platform/devices/fff51000.ethernet/driver/unbind
> echo fff51000.ethernet > /sys/bus/platform/drivers_probe
> 
> This mimics "PCI: Introduce new device binding path using
> pci_dev.driver_override" [2], which is an interface enhancement
> for more deterministic PCI device binding, e.g., when in the
> presence of hotplug.
> 
> [1] http://lkml.iu.edu/hypermail/linux/kernel/1402.1/00177.html
> [2] http://lists-archives.com/linux-kernel/28030441-pci-introduce-new-
> device-binding-path-using-pci_dev-driver_override.html
> 
> Suggested-by: Alex Williamson <alex.williamson@redhat.com>
> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
> ---

Reviewed-by: Stuart Yoder <stuart.yoder@freescale.com>