-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello Alan, On Fri, 2016-09-16 at 17:40 -0400, Alan Stern wrote: > We're still getting runtime suspends, but now at 2-second intervals. > This is partly because the driver isn't calling > pm_runtime_mark_last_busy(), but there may be more to it. The 2-second > period is the default autosuspend timeout for USB devices. However, I > don't see the activity that rtsx_usb_get_card_status() should produce > when rtsx_usb_suspend() runs; I don't know why not. > > We're also getting occasional I/O attempts while the device is > suspended. They must be on some other pathway, not the one fixed by > the patch above. Let's see if we can find out just where they come > from. > > Ritesh, please try applying this patch on top of the previous one. It > will produce output in the kernel log whenever these bad I/O attempts > occur. Also, enable dynamic debugging for the rtsx_usb driver: > Please find links to the usbmon trace and the kernel trace. https://people.debian.org/~rrs/tmp/4.8.0-rc6ulf1alan1+.kern.log https://people.debian.org/~rrs/tmp/usb-4.8.0-rc6ulf1alan1+.log.gz Thanks. > echo 'module rtsx_usb =p' >/sys/kernel/debug/dynamic_debug/control > > before starting the test. (You may need to mount a debugfs filesystem > on /sys/kernel/debug first.) > > Alan Stern > > > > Index: usb-4.x/drivers/usb/core/hcd.c > =================================================================== > --- usb-4.x.orig/drivers/usb/core/hcd.c > +++ usb-4.x/drivers/usb/core/hcd.c > @@ -1647,6 +1647,8 @@ int usb_hcd_submit_urb (struct urb *urb, > status = map_urb_for_dma(hcd, urb, mem_flags); > if (likely(status == 0)) { > status = hcd->driver->urb_enqueue(hcd, urb, > mem_flags); > + if (status == -EHOSTUNREACH) > + dump_stack(); > if (unlikely(status)) > unmap_urb_for_dma(hcd, urb); > } > - -- Ritesh Raj Sarraf RESEARCHUT - http://www.researchut.com "Necessity is the mother of invention." -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJX3SwNAAoJEKY6WKPy4XVpMaYQAK3p/meduq2SLRKjcLuher/+ U6W0+6t1MJmNLZgArqEYLprGQs8dboDUVuYdOkpDyjsL3oRVc2RFRhKP4n5uyeqf UOyyJC/Dn8JpW5abQPdQOi8/zeY019P1MPKd/lAvjs+MXOdRvOluwne3KGeVJzrc nWNt9YMZCvxscbXjJVqNWFh8utg6BVVoJ72sqkHYL6N+cWKwKb4QphgNXbhoPQq3 K7KwsBywQHty/Wf4TXB6n8z/6zR6uNHQjaveboUvidkMhWXYFSVag6ba6ZOsAyoL nPWvowTTKO3snKh2AzHhJEzgky2EXMoxG5+GzA3nBA9suAapxuS7tTSt5YAShupv at1FASeb8kyZ7vt3Srq7WQN7OIlER9zvVvapENJHwqATnHAQ+35h+7o1CrZLjDyF UB5qKWOOQlFmiEfjjs15bLumBQqA4vX7JvYqJxNX7AtOPUXZHvs85eX7S4s18TZ7 OYO5JkS0xcLD6HMvuxzwO+UDS5DYknwma8gAPvHg1mX8QQMOPNkbnd7Igt9kjhMR ZioeP0xLyyUGwjGErQpzgQwHlk5bMQhQ4iiOxi4nz4aCWLCs2YwzojfwtfDxSYnV rCSjWEAanG3eRP7iPBtbdrbFmWsjSsavopXXlLPNYDjBjnpm2/IcyIlC/dTKKYJz 0rkc0hreSRuSDMPxbkfV =d/iL -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
