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authorDavid S. Miller <davem@sunset.davemloft.net>2006-07-17 21:39:09 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-07-21 14:18:11 -0700
commit9d7ab1f4d56dffcddc1177b3cd55b6da6620e1e1 (patch)
treea551efc605c7b4d10af4df101470c17308b7822e /arch/sparc/kernel/of_device.c
parent67e23a1e60b6bc0a090407d0fc060166ab558b72 (diff)
downloadlinux-linaro-stable-9d7ab1f4d56dffcddc1177b3cd55b6da6620e1e1.tar.gz
[SPARC]: Fix initialization of sun4d SBUS interrupts.
1) Explicitly traverse to the root looking for the "sbi". 2) Grab the "board#" property from the sbi's parent and verify that this parent is an "io-unit" node. 3) Skip IRQ initialization when device lacks "reg" property. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/of_device.c')
-rw-r--r--arch/sparc/kernel/of_device.c34
1 files changed, 31 insertions, 3 deletions
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index 5a2faad5d043..97bf87e8cdde 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device.c
@@ -596,14 +596,41 @@ static struct of_device * __init scan_one_device(struct device_node *dp,
static int pil_to_sbus[] = {
0, 0, 1, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 0,
};
- struct device_node *busp = dp->parent;
+ struct device_node *io_unit, *sbi = dp->parent;
struct linux_prom_registers *regs;
- int board = of_getintprop_default(busp, "board#", 0);
- int slot;
+ int board, slot;
+
+ while (sbi) {
+ if (!strcmp(sbi->name, "sbi"))
+ break;
+
+ sbi = sbi->parent;
+ }
+ if (!sbi)
+ goto build_resources;
regs = of_get_property(dp, "reg", NULL);
+ if (!regs)
+ goto build_resources;
+
slot = regs->which_io;
+ /* If SBI's parent is not io-unit or the io-unit lacks
+ * a "board#" property, something is very wrong.
+ */
+ if (!sbi->parent || strcmp(sbi->parent->name, "io-unit")) {
+ printk("%s: Error, parent is not io-unit.\n",
+ sbi->full_name);
+ goto build_resources;
+ }
+ io_unit = sbi->parent;
+ board = of_getintprop_default(io_unit, "board#", -1);
+ if (board == -1) {
+ printk("%s: Error, lacks board# property.\n",
+ io_unit->full_name);
+ goto build_resources;
+ }
+
for (i = 0; i < op->num_irqs; i++) {
int this_irq = op->irqs[i];
int sbusl = pil_to_sbus[this_irq];
@@ -617,6 +644,7 @@ static struct of_device * __init scan_one_device(struct device_node *dp,
}
}
+build_resources:
build_device_resources(op, parent);
op->dev.parent = parent;