Le 11/06/2022 à 17:10, Jason A. Donenfeld a écrit :
The platform's RNG must be available before random_init() in order to be useful for initial seeding, which in turn means that it needs to be called from setup_arch(), rather than from an init call. Fortunately, each platform already has a setup_arch function pointer, which means it's easy to wire this up. This commit also removes some noisy log messages that don't add much.
Cc: stable@vger.kernel.org Cc: Michael Ellerman mpe@ellerman.id.au Cc: Christophe Leroy christophe.leroy@csgroup.eu Fixes: a489043f4626 ("powerpc/pseries: Implement arch_get_random_long() based on H_RANDOM") Signed-off-by: Jason A. Donenfeld Jason@zx2c4.com
Reviewed-by: Christophe Leroy christophe.leroy@csgroup.eu
arch/powerpc/platforms/pseries/pseries.h | 2 ++ arch/powerpc/platforms/pseries/rng.c | 11 +++-------- arch/powerpc/platforms/pseries/setup.c | 1 + 3 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h index f5c916c839c9..1d75b7742ef0 100644 --- a/arch/powerpc/platforms/pseries/pseries.h +++ b/arch/powerpc/platforms/pseries/pseries.h @@ -122,4 +122,6 @@ void pseries_lpar_read_hblkrm_characteristics(void); static inline void pseries_lpar_read_hblkrm_characteristics(void) { } #endif +void pseries_rng_init(void);
- #endif /* _PSERIES_PSERIES_H */
diff --git a/arch/powerpc/platforms/pseries/rng.c b/arch/powerpc/platforms/pseries/rng.c index 6268545947b8..6ddfdeaace9e 100644 --- a/arch/powerpc/platforms/pseries/rng.c +++ b/arch/powerpc/platforms/pseries/rng.c @@ -10,6 +10,7 @@ #include <asm/archrandom.h> #include <asm/machdep.h> #include <asm/plpar_wrappers.h> +#include "pseries.h" static int pseries_get_random_long(unsigned long *v) @@ -24,19 +25,13 @@ static int pseries_get_random_long(unsigned long *v) return 0; } -static __init int rng_init(void) +void __init pseries_rng_init(void) { struct device_node *dn; dn = of_find_compatible_node(NULL, NULL, "ibm,random"); if (!dn)
return -ENODEV;- pr_info("Registering arch random hook.\n");
return;
- of_node_put(dn);
- return 0; }
-machine_subsys_initcall(pseries, rng_init); diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index afb074269b42..ee4f1db49515 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -839,6 +839,7 @@ static void __init pSeries_setup_arch(void) } ppc_md.pcibios_root_bridge_prepare = pseries_root_bridge_prepare;
- pseries_rng_init(); }
static void pseries_panic(char *str)