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powerpc/powernv: Fix type of opal_mpipl_query_tag() addr argument
opal_mpipl_query_tag() takes a pointer to a 64-bit value, which firmware writes a value to. As OPAL is traditionally big endian this value will be big endian. This can be confirmed by looking at the implementation in skiboot: static uint64_t opal_mpipl_query_tag(enum opal_mpipl_tags tag, __be64 *tag_val) { ... *tag_val = cpu_to_be64(opal_mpipl_tags[tag]); return OPAL_SUCCESS; } Fix the declaration to annotate that the value is big endian. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210421125402.1955013-2-mpe@ellerman.id.au
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@ -307,7 +307,7 @@ int opal_secvar_enqueue_update(const char *key, uint64_t key_len, u8 *data,
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s64 opal_mpipl_update(enum opal_mpipl_ops op, u64 src, u64 dest, u64 size);
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s64 opal_mpipl_register_tag(enum opal_mpipl_tags tag, u64 addr);
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s64 opal_mpipl_query_tag(enum opal_mpipl_tags tag, u64 *addr);
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s64 opal_mpipl_query_tag(enum opal_mpipl_tags tag, __be64 *addr);
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s64 opal_signal_system_reset(s32 cpu);
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s64 opal_quiesce(u64 shutdown_type, s32 cpu);
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