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| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2017-01-23 23:49:53 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-01-25 03:34:20 +0100 |
| commit | de6d2d1b7bf2b3a8d5e57ebffad9f2688fe00a7a (patch) | |
| tree | e6207f8bbf15b38ac0cda198ca429f5864e8d55f /arch | |
| parent | powerpc/kernel: Remove nested if statements in rtas_initialize() (diff) | |
| download | linux-de6d2d1b7bf2b3a8d5e57ebffad9f2688fe00a7a.tar.xz linux-de6d2d1b7bf2b3a8d5e57ebffad9f2688fe00a7a.zip | |
powerpc/kernel: Use of_property_read_u32() in rtas_initialize()
This uses of_property_read_u32() in rtas_initialize() so that we
needn't explicitly care the CPU's endian.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 9759dcbd055d..ba5a4cc0e5b6 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -1145,7 +1145,8 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs) void __init rtas_initialize(void) { unsigned long rtas_region = RTAS_INSTANTIATE_MAX; - const __be32 *basep, *entryp, *sizep; + u32 base, size, entry; + int no_base, no_size, no_entry; /* Get RTAS dev node and fill up our "rtas" structure with infos * about it. @@ -1154,20 +1155,17 @@ void __init rtas_initialize(void) if (!rtas.dev) return; - basep = of_get_property(rtas.dev, "linux,rtas-base", NULL); - sizep = of_get_property(rtas.dev, "rtas-size", NULL); - if (basep == NULL || sizep == NULL) { + no_base = of_property_read_u32(rtas.dev, "linux,rtas-base", &base); + no_size = of_property_read_u32(rtas.dev, "rtas-size", &size); + if (no_base || no_size) { rtas.dev = NULL; return; } - rtas.base = __be32_to_cpu(*basep); - rtas.size = __be32_to_cpu(*sizep); - entryp = of_get_property(rtas.dev, "linux,rtas-entry", NULL); - if (entryp == NULL) /* Ugh */ - rtas.entry = rtas.base; - else - rtas.entry = __be32_to_cpu(*entryp); + rtas.base = base; + rtas.size = size; + no_entry = of_property_read_u32(rtas.dev, "linux,rtas-entry", &entry); + rtas.entry = no_entry ? rtas.base : entry; /* If RTAS was found, allocate the RMO buffer for it and look for * the stop-self token if any |