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7b878d4b48
Add predicate functions for having arch_get_random[_seed]*(). The only current use is to avoid the loop in arch_random_refill() when arch_get_random_seed_long() is unavailable. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
50 lines
831 B
C
50 lines
831 B
C
#ifndef _ASM_POWERPC_ARCHRANDOM_H
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#define _ASM_POWERPC_ARCHRANDOM_H
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#ifdef CONFIG_ARCH_RANDOM
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#include <asm/machdep.h>
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static inline int arch_get_random_long(unsigned long *v)
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{
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if (ppc_md.get_random_long)
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return ppc_md.get_random_long(v);
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return 0;
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}
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static inline int arch_get_random_int(unsigned int *v)
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{
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unsigned long val;
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int rc;
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rc = arch_get_random_long(&val);
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if (rc)
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*v = val;
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return rc;
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}
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static inline int arch_has_random(void)
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{
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return !!ppc_md.get_random_long;
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}
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int powernv_get_random_long(unsigned long *v);
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static inline int arch_get_random_seed_long(unsigned long *v)
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{
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return 0;
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}
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static inline int arch_get_random_seed_int(unsigned int *v)
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{
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return 0;
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}
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static inline int arch_has_random_seed(void)
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{
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return 0;
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}
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#endif /* CONFIG_ARCH_RANDOM */
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#endif /* _ASM_POWERPC_ARCHRANDOM_H */
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