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powerpc/archrandom: fix arch_get_random_seed_int()

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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>
This commit is contained in:
Ard Biesheuvel 2019-12-04 11:50:15 +00:00 committed by Greg Kroah-Hartman
parent 137875d425
commit 7e4108de53
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/include/asm/archrandom.h
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@ -28,7 +28,7 @@ static inline int arch_get_random_seed_int(unsigned int *v)
unsigned long val;
int rc;
rc = arch_get_random_long(&val);
rc = arch_get_random_seed_long(&val);
if (rc)
*v = val;