Attachment 97287 Details for Bug 136008 – acpi_ec.c.txt

acpi_ec.c.txt

acpi_ec.c.txt (text/plain), 1.64 KB, created by Sevan Janiyan on 2010-01-11 20:08:40 UTC

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Creator: Sevan Janiyan

Created: 2010-01-11 20:08:40 UTC

Size: 1.64 KB

patch

obsolete

>--- sys/dev/acpica/acpi_ec.c.orig	2009-12-16 03:21:36.283295223 +0000
>+++ sys/dev/acpica/acpi_ec.c	2009-12-16 03:38:44.410426185 +0000
>@@ -197,6 +197,10 @@
> SYSCTL_INT(_debug_acpi_ec, OID_AUTO, timeout, CTLFLAG_RW, &ec_timeout,
>     EC_TIMEOUT, "Total time spent waiting for a response (poll+sleep)");
> 
>+static int	ec_disable_polling;
>+SYSCTL_INT(_debug_acpi_ec, OID_AUTO, disable_polling, CTLFLAG_RW, &ec_disable_polling, 0,
>+    "Totally disable use of polled mode (Dell EC problem workaround)");
>+
> static ACPI_STATUS
> EcLock(struct acpi_ec_softc *sc)
> {
>@@ -577,7 +581,9 @@
> 
>     /* Disable the GPE so we don't get EC events during shutdown. */
>     sc = device_get_softc(dev);
>-    AcpiDisableGpe(sc->ec_gpehandle, sc->ec_gpebit, ACPI_NOT_ISR);
>+    if (!ec_disable_polling){
>+    AcpiDisableGpe(sc->ec_gpehandle,sc->ec_gpebit,ACPI_NOT_ISR);
>+    }
>     return (0);
> }
> 
>@@ -814,7 +820,7 @@
> 
>     ACPI_SERIAL_ASSERT(ec);
>     Status = AE_NO_HARDWARE_RESPONSE;
>-    int need_poll = cold || rebooting || ec_polled_mode || sc->ec_suspending;
>+    int need_poll = ( cold || rebooting || ec_polled_mode || sc->ec_suspending ) && !ec_disable_polling;
>     /*
>      * The main CPU should be much faster than the EC.  So the status should
>      * be "not ready" when we start waiting.  But if the main CPU is really
>@@ -894,7 +900,11 @@
> 	    device_printf(sc->ec_dev,
> 		"wait timed out (%sresponse), forcing polled mode\n",
> 		Status == AE_OK ? "" : "no ");
>+	if (ec_disable_polling) {
>+	    device_printf(sc->ec_dev,"Polling explicitily disabled! Continue waiting for generated GPEs...\n");
>+	} else {
> 	    ec_polled_mode = TRUE;
>+		}
> 	}
>     }
>     if (Status != AE_OK)

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