APPLIED(B,C): [SRU] [B/C/D/Unstable] [PATCH 0/1] Ignore "incomplete report" from Elan touchpanels

[Khaled Elmously]

On 2019-01-29 16:44:29 , Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1813733
> 
> [Impact]
> When using Elan touchpanels, this message keeps getting spurted out:
> [  136.138487] i2c_hid i2c-DELL08D6:00: i2c_hid_get_input: incomplete report (14/65535)
> This is an error message, so systemd-journald flushes to disk as soon as
> the message shows. This prevents the storage enters power saving state,
> hurting battery time.
> 
> Other than the annoying message, the touchpad itself works fine.
> 
> [Fix]
> Just warn once to avoid the annoying message.
> 
> [Test]
> The annoying message stops once the fix applied.
> 
> [Regression Potential]
> None. The user still gets the warning from dmesg without all the
> flooding.
> 
> Kai-Heng Feng (1):
>   HID: i2c-hid: Ignore input report if there's no data present on Elan
>     touchpanels
> 
>  drivers/hid/i2c-hid/i2c-hid-core.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> -- 
> 2.17.1
> 
> 
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