On Thu, 6 Sep 2018, Kai-Heng Feng wrote: > Raydium touchscreen triggers interrupt storm after system-wide suspend: > [ 179.085033] i2c_hid i2c-CUST0000:00: i2c_hid_get_input: incomplete > report (58/65535) > > According to Raydium, Windows driver does not reset the device after > system resume. > > The HID over I2C spec does specify a reset should be used at > intialization, but it doesn't specify if reset is required for system > suspend. > > Tested this patch on other i2c-hid touchpanels I have and those > touchpanels do work after S3 without doing reset. If any regression > happens to other touchpanel vendors, we can use quirk for Raydium > devices. > > There's still one device uses I2C_HID_QUIRK_RESEND_REPORT_DESCR so keep > it there. > > Cc: Aaron Ma <aaron...@canonical.com> > Cc: AceLan Kao <acelan....@canonical.com> > Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com>
Queued in for-4.19/fixes. Thanks, -- Jiri Kosina SUSE Labs
