On Wed, Dec 16, 2015 at 1:28 AM, Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> wrote: > On Tue, Dec 15, 2015 at 11:14:32AM -0800, Nish Aravamudan wrote: >> [Apologies for the resend, didn't realize I hadn't changed my GMail settings >> to not use HTML.] >> >> I have recently purchased a Lenovo Yoga 900 and most everything is working >> with a slightly modified 4.4-rc5 (https://lkml.org/lkml/2015/11/30/441 applied >> to enable the touchpad itself), I am seeing two issues: >> >> 1) On suspend/resume, the touchpad is non-functional. A `modprobe -r i2c-hid; >> modprobe i2c-hid` "fixes" it. >> >> The kernel emits: >> >> i2c_hid i2c-SYNA2B29:00: failed to reset device. >> dpm_run_callback(): i2c_hid_resume+0x0/0xc0 [i2c_hid] returns -61 >> PM: Device i2c-SYNA2B29:00 failed to resume: error -61 >> >> During the resume. So perhaps this is a timing issue (given that once >> resumed, the >> module reload does work?). > > Linus noticed this as well and Jiri suggested the below patch which > seemed to fix the issue (although it increased resume time a bit). > > I was supposed to get one Lenovo Yoga 900 here to debug this issue but > I'm still waiting for it (sloow big corporation bureaucracy takes some > time to get things purchased outside). With the patch applied to my patched 4.4-rc5, things seem to be working now. I do get one "failed to reset device" message in the logs, but then I'm guessing the second one succeeds and I don't see the "failed to resume" message. -Nish -- 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
