Thanks Daniel for the respin. On Fri, Feb 6, 2015 at 8:25 AM, Daniel Martin <daniel.martin@xxxxxxxxxxx> wrote: > From: Daniel Martin <consume.noise@xxxxxxxxx> > > Query the min dimensions even if the check > SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 > fails, but we know that the firmware version 8.1 is safe. > > With that we don't need quirks for post-2013 models anymore as they > expose correct min and max dimensions. > > v2: Don't use a list for safe firmwares. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=91541 > Signed-off-by: Daniel Martin <consume.noise@xxxxxxxxx> > --- > drivers/input/mouse/synaptics.c | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c > index 7a78d75..0b7805c 100644 > --- a/drivers/input/mouse/synaptics.c > +++ b/drivers/input/mouse/synaptics.c > @@ -368,8 +368,13 @@ static int synaptics_resolution(struct psmouse *psmouse) > } > } > > - if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && > - SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { > + if ((SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && > + SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) || > + /* Firmware v8.1 doesn't stand the previous checks, though has > + * been proven to report correct min coordinates. > + * https://bugzilla.kernel.org/show_bug.cgi?id=91541 */ > + (SYN_ID_MAJOR(priv->identity) == 8 && > + SYN_ID_MINOR(priv->identity) == 1)) { I have one minor comment here. I think it will be safer to ask for: if (SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c) && (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 || /* Firmware v8.1 doesn't stand the previous checks, though has * been proven to report correct min coordinates. * https://bugzilla.kernel.org/show_bug.cgi?id=91541 */ (SYN_ID_MAJOR(priv->identity) == 8 && SYN_ID_MINOR(priv->identity) == 1))) IIRC, the min_dimension bit was properly set, but not the capability >= 7. I am not sure if all the boards with the 8.1 FW are able to be queried on the min coordinate. Cheers, Benjamin > if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { > psmouse_warn(psmouse, > "device claims to have min coordinates query, but I'm not able to read it.\n"); > -- > 2.2.2 > -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
