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powerpc fixes for 5.19 #5

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- On Power8 bare metal, fix creation of RNG platform devices, which are needed
    for the /dev/hwrng driver to probe correctly.
 
 Thanks to: Jason A. Donenfeld, Sachin Sant.
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Merge tag 'powerpc-5.19-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - On Power8 bare metal, fix creation of RNG platform devices, which are
   needed for the /dev/hwrng driver to probe correctly.

Thanks to Jason A. Donenfeld, and Sachin Sant.

* tag 'powerpc-5.19-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/powernv: delay rng platform device creation until later in boot
This commit is contained in:
Linus Torvalds 2022-07-09 10:34:08 -07:00
commit d9cdc3b125
1 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/powerpc/platforms/powernv/rng.c
View File

@ -176,12 +176,8 @@ static int __init pnv_get_random_long_early(unsigned long *v)
NULL) != pnv_get_random_long_early)
return 0;
for_each_compatible_node(dn, NULL, "ibm,power-rng") {
if (rng_create(dn))
continue;
/* Create devices for hwrng driver */
of_platform_device_create(dn, NULL, NULL);
}
for_each_compatible_node(dn, NULL, "ibm,power-rng")
rng_create(dn);
if (!ppc_md.get_random_seed)
return 0;
@ -205,10 +201,18 @@ void __init pnv_rng_init(void)
static int __init pnv_rng_late_init(void)
{
struct device_node *dn;
unsigned long v;
/* In case it wasn't called during init for some other reason. */
if (ppc_md.get_random_seed == pnv_get_random_long_early)
pnv_get_random_long_early(&v);
if (ppc_md.get_random_seed == powernv_get_random_long) {
for_each_compatible_node(dn, NULL, "ibm,power-rng")
of_platform_device_create(dn, NULL, NULL);
}
return 0;
}
machine_subsys_initcall(powernv, pnv_rng_late_init);