On Fri, May 25, 2018 at 2:51 PM, Benjamin Tissoires <benjamin.tissoi...@redhat.com> wrote: > 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 <benjamin.tissoi...@redhat.com> > --- > > Hi, > > Oscar, do you mind if we add your "Tested-by: Oscar Morante <your@email>"?
As mentioned in comment 25 of the bug above (https://bugs.freedesktop.org/show_bug.cgi?id=100436#c25), oscar is fine adding his tested-by line. Cheers, Benjamin > > Andrew, can you check for any sides effects please? > > Cheers, > Benjamin > > drivers/hid/hid-rmi.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c > index 9c9362149641..9e33165250a3 100644 > --- a/drivers/hid/hid-rmi.c > +++ b/drivers/hid/hid-rmi.c > @@ -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 > -- > 2.14.3 >
