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.
Fixes: a489043f4626 ("powerpc/pseries: Implement arch_get_random_long() based on H_RANDOM")
Cc: stable@vger.kernel.org # v3.13+
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220611151015.548325-4-Jason@zx2c4.com
static inline void pseries_lpar_read_hblkrm_characteristics(void) { }
#endif
+void pseries_rng_init(void);
+
#endif /* _PSERIES_PSERIES_H */
#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)
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;
ppc_md.get_random_seed = pseries_get_random_long;
-
of_node_put(dn);
- return 0;
}
-machine_subsys_initcall(pseries, rng_init);
}
ppc_md.pcibios_root_bridge_prepare = pseries_root_bridge_prepare;
+ pseries_rng_init();
}
static void pseries_panic(char *str)