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HID: rmi: use HID_QUIRK_NO_INPUT_SYNC

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When we receive a RMI4 report, we should not unconditionally send an
input_sync event. Instead, we should let the rmi4 transport layer do it
for us.

This fixes a situation where we might receive X in a report and the rest
in a subsequent one. And this messes up user space.

Link: https://bugs.freedesktop.org/show_bug.cgi?id=100436

Signed-off-by: Benjamin Tissoires <[email protected]>
Acked-by: Peter Hutterer <[email protected]>
Tested-by: Oscar Morante <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
This commit is contained in:
Benjamin Tissoires 2018-05-25 14:51:06 +02:00 • committed by Jiri Kosina
commit c94ba06011
1 changed files with 20 additions and 0 deletions
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20
drivers/hid/hid-rmi.c
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@ -413,6 +413,24 @@ static int rmi_event(struct hid_device *hdev, struct hid_field *field,
return 0;
}
static void rmi_report(struct hid_device *hid, struct hid_report *report)
{
struct hid_field *field = report->field[0];
if (!(hid->claimed & HID_CLAIMED_INPUT))
return;
switch (report->id) {
case RMI_READ_DATA_REPORT_ID:
/* fall-through */
case RMI_ATTN_REPORT_ID:
return;
}
if (field && field->hidinput && field->hidinput->input)
input_sync(field->hidinput->input);
}
#ifdef CONFIG_PM
static int rmi_suspend(struct hid_device *hdev, pm_message_t message)
{
@ -637,6 +655,7 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)
hid_set_drvdata(hdev, data);
hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
ret = hid_parse(hdev);
if (ret) {
@ -744,6 +763,7 @@ static struct hid_driver rmi_driver = {
.remove = rmi_remove,
.event = rmi_event,
.raw_event = rmi_raw_event,
.report = rmi_report,
.input_mapping = rmi_input_mapping,
.input_configured = rmi_input_configured,
#ifdef CONFIG_PM