Re: ACPI interrupt storm (was Re: Linux 2.4.21rc6-ac1)

From: Zwane Mwaikambo (zwane@linuxpower.ca)
Date: Sun Jun 01 2003 - 02:23:24 EST


On Sun, 1 Jun 2003, Con Kolivas wrote:

> I get the same problem here with acpi-20030522 applied to rc6
> P4 2.53 on an i845 mobo (P4PE).

I think it could be the Bus Mastering event monitoring thing, can you
shoehorn this (HACK HACK) patch into 2.4?

Index: linux-2.5.70-mm1/drivers/acpi/processor.c
===================================================================
RCS file: /build/cvsroot/linux-2.5.70/drivers/acpi/processor.c,v
retrieving revision 1.1.1.1
diff -u -p -B -r1.1.1.1 processor.c
--- linux-2.5.70-mm1/drivers/acpi/processor.c 27 May 2003 02:19:28 -0000 1.1.1.1
+++ linux-2.5.70-mm1/drivers/acpi/processor.c 29 May 2003 11:32:00 -0000
@@ -711,11 +711,13 @@ acpi_processor_get_power_info (
                  * use this in our C3 policy.
                  */
                 else {
+ goto done;
                         pr->power.states[ACPI_STATE_C3].valid = 1;
                         pr->power.states[ACPI_STATE_C3].latency_ticks =
                                 US_TO_PM_TIMER_TICKS(acpi_fadt.plvl3_lat);
                         pr->flags.bm_check = 1;
                 }
+ done:
         }
 
         /*

-- 
function.linuxpower.ca
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