diff options
| author | Srinivas Ramana <sramana@codeaurora.org> | 2016-05-13 12:58:08 +0530 |
|---|---|---|
| committer | Kyle Yan <kyan@codeaurora.org> | 2016-06-13 19:06:16 -0700 |
| commit | e6855ed3fecab3d3e2c30c57ca250de2e7934039 (patch) | |
| tree | 0875f35faffbf915d044b221823957ea4a4b2aec /arch | |
| parent | 5f47a7839972fd1bd777d07c9c3aa3e58329c1a3 (diff) | |
arm: cpu: read all address cells in dt for cpuid
For v8/arm64 platforms the number of address-cells can be 2.
If the same device tree is used on 32-bit platforms,it is
currently reading only one cell of 32-bits.
Fix this by reading both cells for getting the hwid.
Change-Id: Id281b6b8ac3c9312848c39e11019284f970caced
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/devtree.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index 65addcbf5b30..e94422d0405c 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -88,6 +88,7 @@ void __init arm_dt_init_cpu_maps(void) for_each_child_of_node(cpus, cpu) { u32 hwid; + const __be32 *cell; if (of_node_cmp(cpu->type, "cpu")) continue; @@ -98,13 +99,13 @@ void __init arm_dt_init_cpu_maps(void) * properties is considered invalid to build the * cpu_logical_map. */ - if (of_property_read_u32(cpu, "reg", &hwid)) { - pr_debug(" * %s missing reg property\n", - cpu->full_name); + cell = of_get_property(cpu, "reg", NULL); + if (!cell) { + pr_err("%s: missing reg property\n", cpu->full_name); of_node_put(cpu); return; } - + hwid = of_read_number(cell, of_n_addr_cells(cpu)); /* * 8 MSBs must be set to 0 in the DT since the reg property * defines the MPIDR[23:0]. |