bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
If the property was not specified then the returned resource had a
resource_size(..) == 1, rather than 0. The PCI-E driver checks for 0 so it
blindly continues on with a corrupted resource.
The regression was introduced into v3.12 by:
11be654 PCI: mvebu: Adapt to the new device tree layout
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 5531853..2394e97 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -865,11 +865,13 @@
int ret;
/*
- * These are optional, so we clear them and they'll
- * be zero if they are missing from the DT.
+ * These are optional, so we make sure that resource_size(x) will
+ * return 0.
*/
memset(mem, 0, sizeof(struct resource));
+ mem->end = -1;
memset(io, 0, sizeof(struct resource));
+ io->end = -1;
ret = of_property_read_u32_array(np, "pcie-mem-aperture", reg, ARRAY_SIZE(reg));
if (!ret) {