Insert printk() for every change in operational mode.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx>
---
drivers/acpi/ec.c | 17 ++++++++++++++---
1 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 202db57..bf60b24 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;
}
-
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