PCI: Add legacy_io/mem to all busses

Currently, only PHBs get the legacy_* files, which makes it tricky for userland to get access to the legacy space. This commit exposes them in every bus, since even child buses may forward legacy cycles if configured properly. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

PCI: Add legacy_io/mem to all busses
Currently, only PHBs get the legacy_* files, which makes it tricky for userland to get access to the legacy space. This commit exposes them in every bus, since even child buses may forward legacy cycles if configured properly. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Benjamin Herrenschmidt · Jesse Barnes
1 parent 1ca887970a
Showing 1 changed file with 4 additions and 0 deletions Side-by-side Diff
drivers/pci/bus.c
@@ -158,6 +158,10 @@
 				dev_err(&dev->dev,
 					"Error creating cpulistaffinity"
 					" file, continuing...\n");
+
+			/* Create legacy_io and legacy_mem files for this bus */
+			pci_create_legacy_files(child_bus);
+
 		}
 	}
 }
...	...	@@ -158,6 +158,10 @@
158	158	dev_err(&dev->dev,
159	159	"Error creating cpulistaffinity"
160	160	" file, continuing...\n");
	161	+
	162	+ /* Create legacy_io and legacy_mem files for this bus */
	163	+ pci_create_legacy_files(child_bus);
	164	+
161	165	}
162	166	}
163	167	}