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Commit 95b937e3 authored by Alexey Starikovskiy's avatar Alexey Starikovskiy Committed by Len Brown
Browse files

ACPI: EC: Output changes to operational mode 



Insert printk() for every change in operational mode.

Signed-off-by: default avatarAlexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 66c5f4e7

drivers/acpi/ec.c

+14 −3
Original line number Diff line number Diff line
@@ -173,12 +173,17 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll) 
			return 0;

		clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);

		if (acpi_ec_check_status(ec, event)) {

			if (event == ACPI_EC_EVENT_OBF_1)

			if (event == ACPI_EC_EVENT_OBF_1) {

				/* miss OBF = 1 GPE, don't expect it anymore */

				printk(KERN_INFO PREFIX "missing OBF_1 confirmation,"

					"switching to degraded mode.\n");

				set_bit(EC_FLAGS_ONLY_IBF_GPE, &ec->flags);

			else

			} else {

				/* missing GPEs, switch back to poll mode */

				printk(KERN_INFO PREFIX "missing IBF_1 confirmations,"

					"switch off interrupt mode.\n");

				clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);

			}

			return 0;

		}

	} else {
@@ -491,8 +496,12 @@ static u32 acpi_ec_gpe_handler(void *data) 
		if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))

			status = acpi_os_execute(OSL_EC_BURST_HANDLER,

				acpi_ec_gpe_query, ec);

	} else if (unlikely(!test_bit(EC_FLAGS_GPE_MODE, &ec->flags)))

	} else if (unlikely(!test_bit(EC_FLAGS_GPE_MODE, &ec->flags))) {

		/* this is non-query, must be confirmation */

		printk(KERN_INFO PREFIX "non-query interrupt received,"

			" switching to interrupt mode\n");

		set_bit(EC_FLAGS_GPE_MODE, &ec->flags);

	}



	return ACPI_SUCCESS(status) ?

	    ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
@@ -740,6 +749,8 @@ static int acpi_ec_add(struct acpi_device *device) 
	acpi_ec_add_fs(device);

	printk(KERN_INFO PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n",

			  ec->gpe, ec->command_addr, ec->data_addr);

	printk(KERN_INFO PREFIX "driver started in %s mode\n",

		(test_bit(EC_FLAGS_GPE_MODE, &ec->flags))?"interrupt":"poll");

	return 0;

}