Hi Paul,
On 9/6/21 10:15 PM, Paul Menzel wrote:
> Dear Rafael, dear Aubrey,
>
>
> Thank you for replying.
>
>
> Am 06.09.21 um 14:02 schrieb Rafael J. Wysocki:
>>
>> This should be addressed by commit 2bbfa0addd63 "ACPI: PRM: Deal with
>> table not present or no module found", or yet another fix is needed.
>
> Linux still warns on my systems with Linux 5.14 and Linus’ master in QEMU i440fx and an Asus F2A85-M PRO.
Does the following patch address your problem?
Thanks,
-Aubrey
----------------------------------------------------------------------
>From 52fda76410fcb7a3661687e960634d34fa44fb5f Mon Sep 17 00:00:00 2001
From: Aubrey Li <aubrey.li@xxxxxxxxx>
Date: Tue, 7 Sep 2021 11:06:59 +0800
Subject: [PATCH] ACPI/RPM: Find PRMT table before parse it
Find and verify PRMT table before parse it, this eliminates a
warning on machines without PRMT table.
Signed-off-by: Aubrey Li <aubrey.li@xxxxxxxxxxxxxxx>
---
drivers/acpi/prmt.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/prmt.c b/drivers/acpi/prmt.c
index 1f6007a..89c22bc 100644
--- a/drivers/acpi/prmt.c
+++ b/drivers/acpi/prmt.c
@@ -288,10 +288,18 @@ static acpi_status acpi_platformrt_space_handler(u32 function,
void __init init_prmt(void)
{
+ struct acpi_table_header *tbl;
acpi_status status;
- int mc = acpi_table_parse_entries(ACPI_SIG_PRMT, sizeof(struct acpi_table_prmt) +
+ int mc;
+
+ status = acpi_get_table(ACPI_SIG_PRMT, 0, &tbl);
+ if (ACPI_FAILURE(status))
+ return;
+
+ mc = acpi_table_parse_entries(ACPI_SIG_PRMT, sizeof(struct acpi_table_prmt) +
sizeof (struct acpi_table_prmt_header),
0, acpi_parse_prmt, 0);
+ acpi_put_table(tbl);
/*
* Return immediately if PRMT table is not present or no PRM module found.
*/
--
2.7.4
