[Xen-changelog] [xen master] xen: arm: propagate gic's #address-cells property to dom0.

[patchbot@xxxxxxx]

commit 816f5bb1f0740be8355e1be6cc24edf09547d984
Author:     Ian Campbell <ian.campbell@xxxxxxxxxx>
AuthorDate: Fri Oct 24 10:58:33 2014 +0100
Commit:     Ian Campbell <ian.campbell@xxxxxxxxxx>
CommitDate: Wed Nov 5 10:11:13 2014 +0000

    xen: arm: propagate gic's #address-cells property to dom0.
    
    The interrupt-map property requires that the interrupt-parent node
    must have both #address-cells and #interrupt-cells properties (see
    ePAPR 2.4.3.1). Therefore propagate the property if it is present.
    
    We must propagate (rather than invent our own value) since this value
    is used to size fields within other properties within the tree.
    
    ePAPR strictly speaking requires that the interrupt-parent node
    always has these properties. However reality has diverged from this
    and implementations will recursively search parents for #*-cells
    properties. Hence we only copy if it is present.
    
    Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxxxxx>
---
 xen/arch/arm/domain_build.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 5aca925..de180d8 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -788,6 +788,8 @@ static int make_gic_node(const struct domain *d, void *fdt,
 {
     const struct dt_device_node *gic = dt_interrupt_controller;
     int res = 0;
+    const void *addrcells;
+    u32 addrcells_len;
 
     /*
      * Xen currently supports only a single GIC. Discard any secondary
@@ -817,6 +819,14 @@ static int make_gic_node(const struct domain *d, void *fdt,
             return res;
     }
 
+    addrcells = dt_get_property(gic, "#address-cells", &addrcells_len);
+    if ( addrcells )
+    {
+        res = fdt_property(fdt, "#address-cells", addrcells, addrcells_len);
+        if ( res )
+            return res;
+    }
+
     res = fdt_end_node(fdt);
 
     return res;
--
generated by git-patchbot for /home/xen/git/xen.git#master

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