-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On Fri, 2016-09-09 at 12:54 +0200, Ulf Hansson wrote: > This affects the way the core calls the host driver's ->set_ios() > callback. Earlier it was invoked first to do power off then power up. > With this change it starts with power up instead. > I wanted to try this because I suspected the initial state could be wrong. > > So here are some other ideas on how to move forward. > 1. Run with CONFIG_PM unset to see if we can reproduce the problem. > 2. Revert back the state in the mmc core we had in 3.16 around how it > deals with runtime PM for host devices. That's actually very easy as > we only need to remove the pm_runtime_put|get() calls in > mmc_claim|release_host(). > > Ritesh, can you try these options? > Yes. I can try the above ones now. I'm building the kernel for it. > Neither of the above will actually solve the problem, so I guess we > anyway need take a closer look to understand why the usb device is > accessed when it is actually runtime suspended. > > BTW, Ritesh you could also run a git bisect to find out if/when this > became broken. What starting point do you want me to use ? 4.0 ? - -- Ritesh Raj Sarraf RESEARCHUT - http://www.researchut.com "Necessity is the mother of invention." -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJX0rWtAAoJEKY6WKPy4XVpgeYP/3FCabIWEOvKeVJK52B5gviF +CFz00vNVddMDQjUlbN/JzaA8h5HiLMBaTp/7nBvaMYKYKZjjo8iiNQ/3jjwPUu8 S/XrWPvMUVJUhF42OMKTl4uUpVPo3fI18SYIw4XFt5pNaUFrmBPjZ6S23BhqfLN3 x2BSw9rwZrCmxH4aMpfWmDFzjWvkuJ6grpxPfbz2lx4t7BWGs4wWdTc0yfQgzWDR SLD/CpPCkVFjnpjRnrYZei3nNo0tS0+qSv1SsRwy8GchRbOo9bK1W8YKnLH/AFLb kCYcVKCc4mq8iq5e05vjPvdppXpbzKKlhpxxtlqzLjAYx9FbESRN89D9c7V1Ng0q c40b+lQV7AGYUxaf+tOcErflDvzRquR1dcwcjJizgeO/pOI6uXGWE+/T5j+4q4UJ cypkxjzPIz8SbipNEPGf2nSMppXC1RRcBGo4247vFZ0QYTC7RAViL6ErRS67kfM9 5eX2iBtO3qNZMxIMqBPu97rLoLHSZ3nFEwNbyyFnNHERZuvLUZrZY208tZYUfZKZ X18QJKPrqfbb9n+KyyLNTaESm6jhW2yYFdiRs/4LQWniOlLLPa+6GOD7E81044nB t8LAKtSSxK+qvFVcfqrZSfaivRKQZbYwuk+x3O4vAUDgTpTgmugNaDTYendN3v1B R809X7cWC6V1kzTaBkK9 =o1rL -----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
