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4dbe191c04
Sometimes, more than one (generally two) device can point to the same fwnode. However, only one device is set as the fwnode's device (fwnode->dev) and can be looked up from the fwnode. Typically, only one of these devices actually have a driver and actually probe. If we create device links for all these devices, then the suppliers' of these devices (with the same fwnode) will never get a sync_state() call because one of their consumer devices will never probe (because they don't have a driver). So, create device links only for the device that is considered as the fwnode's device. One such example of this is the PCI bridge platform_device and the corresponding pci_bus device. Both these devices will have the same fwnode. It's the platform_device that is registered first and is set as the fwnode's device. Also the platform_device is the one that actually probes. Without this patch none of the suppliers of a PCI bridge platform_device would get a sync_state() callback. Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20200321045448.15192-1-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| .. | ||
| firmware_loader | ||
| power | ||
| regmap | ||
| test | ||
| arch_topology.c | ||
| attribute_container.c | ||
| base.h | ||
| bus.c | ||
| cacheinfo.c | ||
| class.c | ||
| component.c | ||
| container.c | ||
| core.c | ||
| cpu.c | ||
| dd.c | ||
| devcon.c | ||
| devcoredump.c | ||
| devres.c | ||
| devtmpfs.c | ||
| driver.c | ||
| firmware.c | ||
| hypervisor.c | ||
| init.c | ||
| isa.c | ||
| Kconfig | ||
| Makefile | ||
| map.c | ||
| memory.c | ||
| module.c | ||
| node.c | ||
| pinctrl.c | ||
| platform-msi.c | ||
| platform.c | ||
| property.c | ||
| soc.c | ||
| swnode.c | ||
| syscore.c | ||
| topology.c | ||
| transport_class.c | ||