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| author | Anshuman Khandual <khandual@linux.vnet.ibm.com> | 2015-07-29 09:10:03 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-08-12 07:05:46 +0200 |
| commit | 9c61f7a0ad6fdff85b0c4c648e0c94947ea05c76 (patch) | |
| tree | e8089508131238c323798084faa51a4ecacc6945 /arch/powerpc/kernel/prom.c | |
| parent | powerpc/slb: Add documentation on runtime patching of SLB encoding (diff) | |
| download | linux-9c61f7a0ad6fdff85b0c4c648e0c94947ea05c76.tar.xz linux-9c61f7a0ad6fdff85b0c4c648e0c94947ea05c76.zip | |
powerpc/prom: Simplify the logic to fetch SLB size
The code to fetch the SLB size from the device tree wants to first look
for "slb-size" and then if that's not found "ibm,slb-size".
We can simplify the code by looking for the properties and then if we
find one of them we set mmu_slb_size.
We also change the function name from check_cpu_slb_size() to
init_mmu_slb_size() as the function doesn't check anything, it only
initialises mmu_slb_size.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
[mpe: Rewrite change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/prom.c')
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 8b888b12a475..4bb43c09489f 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -218,22 +218,18 @@ static void __init check_cpu_pa_features(unsigned long node) } #ifdef CONFIG_PPC_STD_MMU_64 -static void __init check_cpu_slb_size(unsigned long node) +static void __init init_mmu_slb_size(unsigned long node) { const __be32 *slb_size_ptr; - slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL); - if (slb_size_ptr != NULL) { - mmu_slb_size = be32_to_cpup(slb_size_ptr); - return; - } - slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL); - if (slb_size_ptr != NULL) { + slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL) ? : + of_get_flat_dt_prop(node, "ibm,slb-size", NULL); + + if (slb_size_ptr) mmu_slb_size = be32_to_cpup(slb_size_ptr); - } } #else -#define check_cpu_slb_size(node) do { } while(0) +#define init_mmu_slb_size(node) do { } while(0) #endif static struct feature_property { @@ -380,7 +376,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node, check_cpu_feature_properties(node); check_cpu_pa_features(node); - check_cpu_slb_size(node); + init_mmu_slb_size(node); #ifdef CONFIG_PPC64 if (nthreads > 1) |