On 8/6/21 9:23 PM, Rafael J. Wysocki wrote: > On Fri, Aug 6, 2021 at 2:48 AM Aubrey Li <aubrey.li@xxxxxxxxx> wrote: >> >> On the system PRMT table is not present, dmesg output: >> >> $ dmesg | grep PRM >> [ 1.532237] ACPI: PRMT not present >> [ 1.532237] PRM: found 4294967277 modules >> >> The result of acpi_table_parse_entries need to be checked and return >> immediately if PRMT table is not present or no PRM module found. >> >> Signed-off-by: Aubrey Li <aubrey.li@xxxxxxxxxxxxxxx> >> --- >> drivers/acpi/prmt.c | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/drivers/acpi/prmt.c b/drivers/acpi/prmt.c >> index 31cf9ae..1f6007a 100644 >> --- a/drivers/acpi/prmt.c >> +++ b/drivers/acpi/prmt.c >> @@ -292,6 +292,12 @@ void __init init_prmt(void) >> int mc = acpi_table_parse_entries(ACPI_SIG_PRMT, sizeof(struct acpi_table_prmt) + >> sizeof (struct acpi_table_prmt_header), >> 0, acpi_parse_prmt, 0); >> + /* >> + * Return immediately if PRMT table is not present or no PRM module found. >> + */ >> + if (mc <= 0) >> + return; >> + >> pr_info("PRM: found %u modules\n", mc); >> >> status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT, >> -- > > Applied as 5.14-rc material, thanks! > > However, since I'm on vacation next week, it will get into linux-next > after -rc6. > Thanks Rafael!