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authorAlexey Starikovskiy <astarikovskiy@suse.de>2007-10-22 14:19:03 +0400
committerLen Brown <len.brown@intel.com>2007-10-25 16:31:31 -0400
commit95b937e3f52a7f5546c4bffe29886fe400bad1d1 (patch)
tree80865061245cb9151f62d82791c89d3020a37f1b /drivers/acpi
parent66c5f4e7367b0085652931b2f3366de29e7ff5ec (diff)
ACPI: EC: Output changes to operational mode
Insert printk() for every change in operational mode. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/ec.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 202db575d5d..bf60b24ebf5 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -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;
}