[PATCH] ppc64: PCI ignores empty phb regions

[Benjamin Herrenschmidt]

Hi !

The ppc64 PCI code, when parsing the OF tree, may end up getting empty
regions in addition to the "normal" ones for the PHB (some pSeries OF
device-tree contains weird "ranges" properties). These are harmless but
do trigger some annoying warnings during boot, so let's ignore them.

Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>

Index: linux-work/arch/ppc64/kernel/pci.c
===================================================================
--- linux-work.orig/arch/ppc64/kernel/pci.c	2004-10-25 21:58:12.000000000 +1000
+++ linux-work/arch/ppc64/kernel/pci.c	2004-10-26 14:18:54.171775248 +1000
@@ -654,6 +654,8 @@
 			cpu_phys_addr = cpu_phys_addr << 32 | ranges[4];
 
 		size = (unsigned long)ranges[na+3] << 32 | ranges[na+4];
+		if (size == 0)
+			continue;
 		switch ((ranges[0] >> 24) & 0x3) {
 		case 1:		/* I/O space */
 			hose->io_base_phys = cpu_phys_addr;


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