Messages in this thread | | | Date | Mon, 5 May 2014 15:55:09 +0200 (CEST) | From | Jiri Kosina <> | Subject | Re: [PATCH] HID: core: fix computation of the report size |
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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@gmail.com> > Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> > --- > > 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
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