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| author | Daniel Hellstrom <daniel@gaisler.com> | 2011-01-04 01:41:33 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-04 11:16:37 -0800 |
| commit | 9663eb21fcfeb1ed9afd73d14bbc4198796cfc7b (patch) | |
| tree | d220c96ed6c4db5c1f8fda3bcf775b59f8c5b3cb /arch/sparc/kernel | |
| parent | 2791c1a4390085789e37347fc49f7d189fedae88 (diff) | |
| download | linux-9663eb21fcfeb1ed9afd73d14bbc4198796cfc7b.tar.gz linux-9663eb21fcfeb1ed9afd73d14bbc4198796cfc7b.tar.bz2 linux-9663eb21fcfeb1ed9afd73d14bbc4198796cfc7b.zip | |
SPARC/LEON: avoid AMBAPP name duplicates in openprom fs when REG is missing
When the REG property is not available the NODE-ID is used as an unique
identifier in order to avoid filesystem name duplicates in /proc/openprom
filesystem
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/prom_32.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/arch/sparc/kernel/prom_32.c b/arch/sparc/kernel/prom_32.c index 0a37e8cfd160..05fb25330583 100644 --- a/arch/sparc/kernel/prom_32.c +++ b/arch/sparc/kernel/prom_32.c @@ -136,18 +136,29 @@ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) /* "name:vendor:device@irq,addrlo" */ static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf) { - struct amba_prom_registers *regs; unsigned int *intr; - unsigned int *device, *vendor; + struct amba_prom_registers *regs; + unsigned int *intr, *device, *vendor, reg0; struct property *prop; + int interrupt = 0; + /* In order to get a unique ID in the device tree (multiple AMBA devices + * may have the same name) the node number is printed + */ prop = of_find_property(dp, "reg", NULL); - if (!prop) - return; - regs = prop->value; + if (!prop) { + reg0 = (unsigned int)dp->phandle; + } else { + regs = prop->value; + reg0 = regs->phys_addr; + } + + /* Not all cores have Interrupt */ prop = of_find_property(dp, "interrupts", NULL); if (!prop) - return; - intr = prop->value; + intr = &interrupt; /* IRQ0 does not exist */ + else + intr = prop->value; + prop = of_find_property(dp, "vendor", NULL); if (!prop) return; @@ -159,7 +170,7 @@ static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf) sprintf(tmp_buf, "%s:%d:%d@%x,%x", dp->name, *vendor, *device, - *intr, regs->phys_addr); + *intr, reg0); } static void __init __build_path_component(struct device_node *dp, char *tmp_buf) |