On Wed, 30 Apr 2014, Benjamin Tissoires wrote: > The extra seven bits are only required when allocating the report buffer. > We can not use those extra bytes for the length of the report in the > generic implementation of .request because the device might (will) refuse > the set_report command. > This has been verified on the Atmel touchpad found on the Samsung Ativ 9 > plus, which uses hid-multitouch and HID over I2C. Without this fix, the > device refuses to switch to the multitouch mode, and it becomes unresponsive > from the user point of view. > > Actually, this has been discussed during the initial submission of the > commit 4fa5a7f76cc7b6ac87f57741edd2b124851d119f, see > https://patchwork.kernel.org/patch/3621751/ > > Unfortunately, I completely forgot about it later. > > Reported-by: Matthias Bayer <thematthiasbayer@xxxxxxxxx> > Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx> > --- > > Hi Jiri, > > can you schedule this fix for 3.15? > > Fortunately, the device required some ACPI changes, so it was not seen at all > in 3.13 and before. I am not sure of the status of 3.14, but it is definitively > not working in 3.15. Gah, indeed, a nasty bug. Queuing for 3.15 now, thanks! -- Jiri Kosina SUSE Labs -- 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
