linux-kernel - Re: Regression on VIA C3 motherboard, commit: 66f2173e2

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Message-id: <alpine.LFD.2.00.0902061350470.26256@localhost.localdomain>
Date:	Fri, 06 Feb 2009 13:57:47 -0500 (EST)
From:	Len Brown <lenb@...nel.org>
To:	Ben Greear <greearb@...delatech.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	NetDev <netdev@...r.kernel.org>, linux-acpi@...r.kernel.org
Subject: Re: Regression on VIA C3 motherboard, commit: 66f2173e2

Thanks for the bisect, Ben.

Please test the patch below.

I assume even without the patch, booting with "acpi=off" on your
BIOS-ACPI-disabled box works?  (if no, this patch will not solve
all your problems, for you have additional trouble elsewhere)

I am curious why you're running a CONFIG_ACPI=y kernel
for a box with ACPI disabled. (though yes, it is supposed to work)

I'm even more curious what bad things happen when
you enable ACPI in the BIOS -- can you let me know
and we can try to fix them so the machine can run as shipped?

thanks,
-Len Brown
Intel Open Source Technology Center

diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 775c97a..a885295 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -293,7 +293,12 @@ static void __init check_multiple_madt(void)

 int __init acpi_table_init(void)
 {
-	acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
+	acpi_status status;
+
+	status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
+	if (ACPI_FAILURE(status))
+		return 1;
+
 	check_multiple_madt();
 	return 0;
 }
--
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