This moves the wakeup increment for elan devices to the touch report.
This prevents the drivers from incorrectly reporting a wakeup when the
resume callback resets then device, which causes an interrupt to
occur. This also avoids error messages when these interrupts occur,
since this behavior is expected.
Signed-off-by: Derek Basehore <dbasehore@xxxxxxxxxxxx>
---
drivers/input/mouse/elan_i2c_core.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index cdbe6b38c73c1..6ad53a75f9807 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -49,6 +49,7 @@
#define ETP_MAX_FINGERS 5
#define ETP_FINGER_DATA_LEN 5
+#define ETP_REPORT_LEN_OFFSET 0
#define ETP_REPORT_ID 0x5D
#define ETP_TP_REPORT_ID 0x5E
#define ETP_REPORT_ID_OFFSET 2
@@ -1018,6 +1019,8 @@ static void elan_report_absolute(struct elan_tp_data *data, u8 *packet)
u8 hover_info = packet[ETP_HOVER_INFO_OFFSET];
bool contact_valid, hover_event;
+ pm_wakeup_event(&data->client->dev, 0);
+
hover_event = hover_info & 0x40;
for (i = 0; i < ETP_MAX_FINGERS; i++) {
contact_valid = tp_info & (1U << (3 + i));
@@ -1041,6 +1044,8 @@ static void elan_report_trackpoint(struct elan_tp_data *data, u8 *report)
u8 *packet = &report[ETP_REPORT_ID_OFFSET + 1];
int x, y;
+ pm_wakeup_event(&data->client->dev, 0);
+
if (!data->tp_input) {
dev_warn_once(&data->client->dev,
"received a trackpoint report while no trackpoint device has been created. Please report upstream.\n");
@@ -1065,7 +1070,6 @@ static void elan_report_trackpoint(struct elan_tp_data *data, u8 *report)
static irqreturn_t elan_isr(int irq, void *dev_id)
{
struct elan_tp_data *data = dev_id;
- struct device *dev = &data->client->dev;
int error;
u8 report[ETP_MAX_REPORT_LEN];
@@ -1083,7 +1087,13 @@ static irqreturn_t elan_isr(int irq, void *dev_id)
if (error)
goto out;
- pm_wakeup_event(dev, 0);
+ /*
+ * Controllers may send a full length report on power on and reset
+ * cases. There are only meaningless bytes in these reports except for
+ * report[ETP_REPORT_LEN_OFFSET], which is 0.
+ */
+ if (!report[ETP_REPORT_LEN_OFFSET])
+ goto out;
switch (report[ETP_REPORT_ID_OFFSET]) {
case ETP_REPORT_ID:
@@ -1093,7 +1103,7 @@ static irqreturn_t elan_isr(int irq, void *dev_id)
elan_report_trackpoint(data, report);
break;
default:
- dev_err(dev, "invalid report id data (%x)\n",
+ dev_err(&data->client->dev, "invalid report id data (%x)\n",
report[ETP_REPORT_ID_OFFSET]);
}
--
2.27.0.212.ge8ba1cc988-goog
