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[SPARC]: Fix initialization of sun4d SBUS interrupts.

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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>
This commit is contained in:
David S. Miller 2006-07-17 21:39:09 -07:00
parent 67e23a1e60
commit 9d7ab1f4d5
1 changed files with 31 additions and 3 deletions
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34
arch/sparc/kernel/of_device.c
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@ -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;