提交 03d1d99c 编写于 作者: A Alexey Starikovskiy 提交者: Len Brown

ACPI: EC: fix dmesg spam regression

Return OBF_1 optimization workaround

http://bugzilla.kernel.org/show_bug.cgi?id=8459Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: NLen Brown <len.brown@intel.com>
上级 667984d9
...@@ -82,6 +82,7 @@ enum { ...@@ -82,6 +82,7 @@ enum {
EC_FLAGS_ADDRESS, /* Address is being written */ EC_FLAGS_ADDRESS, /* Address is being written */
EC_FLAGS_NO_WDATA_GPE, /* Don't expect WDATA GPE event */ EC_FLAGS_NO_WDATA_GPE, /* Don't expect WDATA GPE event */
EC_FLAGS_WDATA, /* Data is being written */ EC_FLAGS_WDATA, /* Data is being written */
EC_FLAGS_NO_OBF1_GPE, /* Don't expect GPE before read */
}; };
static int acpi_ec_remove(struct acpi_device *device, int type); static int acpi_ec_remove(struct acpi_device *device, int type);
...@@ -179,6 +180,10 @@ static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event) ...@@ -179,6 +180,10 @@ static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll) static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
{ {
int ret = 0; int ret = 0;
if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
force_poll = 1;
if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) && if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) &&
test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags))) test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags)))
force_poll = 1; force_poll = 1;
...@@ -192,7 +197,12 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll) ...@@ -192,7 +197,12 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
goto end; goto end;
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags); clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
if (acpi_ec_check_status(ec, event)) { if (acpi_ec_check_status(ec, event)) {
if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) { if (event == ACPI_EC_EVENT_OBF_1) {
/* miss OBF_1 GPE, don't expect it */
pr_info(PREFIX "missing OBF confirmation, "
"don't expect it any longer.\n");
set_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags);
} else if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
/* miss address GPE, don't expect it anymore */ /* miss address GPE, don't expect it anymore */
pr_info(PREFIX "missing address confirmation, " pr_info(PREFIX "missing address confirmation, "
"don't expect it any longer.\n"); "don't expect it any longer.\n");
......
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