From: Ard Biesheuvel ardb@kernel.org
commit b6afd1234cf93aa0d71b4be4788c47534905f0be upstream.
Commit 01c9348c7620ec65
powerpc: Use hardware RNG for arch_get_random_seed_* not arch_get_random_*
updated arch_get_random_[int|long]() to be NOPs, and moved the hardware RNG backing to arch_get_random_seed_[int|long]() instead. However, it failed to take into account that arch_get_random_int() was implemented in terms of arch_get_random_long(), and so we ended up with a version of the former that is essentially a NOP as well.
Fix this by calling arch_get_random_seed_long() from arch_get_random_seed_int() instead.
Fixes: 01c9348c7620ec65 ("powerpc: Use hardware RNG for arch_get_random_seed_* not arch_get_random_*") Signed-off-by: Ard Biesheuvel ardb@kernel.org Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191204115015.18015-1-ardb@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/powerpc/include/asm/archrandom.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/include/asm/archrandom.h +++ b/arch/powerpc/include/asm/archrandom.h @@ -28,7 +28,7 @@ static inline int arch_get_random_seed_i unsigned long val; int rc;
- rc = arch_get_random_long(&val); + rc = arch_get_random_seed_long(&val); if (rc) *v = val;