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| author |   David Gibson <david@gibson.dropbear.id.au> | 2010-02-01 21:34:15 -0700 |
|---|---|---|
| committer |   Grant Likely <grant.likely@secretlab.ca> | 2010-02-09 08:34:10 -0700 |
| commit | 04b954a673dd02f585a2769c4945a43880faa989 (patch) | |
| tree | a786421a31b92b9496bcf8937ce4e4ee592c8955 /drivers/of | |
| parent | of/flattree: endian-convert members of boot_param_header (diff) | |
| download | linux-dev-04b954a673dd02f585a2769c4945a43880faa989.tar.xz linux-dev-04b954a673dd02f585a2769c4945a43880faa989.zip | |
of/flattree: Make the kernel accept ePAPR style phandle information
Currently when processing flattened device trees, the kernel expects
the phandle in a property called "linux,phandle". The ePAPR spec -
not being Linux specific - instead requires phandles to be encoded in
a property named simply "phandle". This patch makes the kernel accept
either form when unflattening the device tree.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/fdt.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 18d282fefe58..b51f797d9d9d 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -310,10 +310,19 @@ unsigned long __init unflatten_dt_node(unsigned long mem, pp = unflatten_dt_alloc(&mem, sizeof(struct property), __alignof__(struct property)); if (allnextpp) { - if (strcmp(pname, "linux,phandle") == 0) { + /* We accept flattened tree phandles either in + * ePAPR-style "phandle" properties, or the + * legacy "linux,phandle" properties. If both + * appear and have different values, things + * will get weird. Don't do that. */ + if ((strcmp(pname, "phandle") == 0) || + (strcmp(pname, "linux,phandle") == 0)) { if (np->phandle == 0) np->phandle = *((u32 *)*p); } + /* And we process the "ibm,phandle" property + * used in pSeries dynamic device tree + * stuff */ if (strcmp(pname, "ibm,phandle") == 0) np->phandle = *((u32 *)*p); pp->name = pname; |