On 05/06/2014 11:43 PM, Felipe Balbi wrote:
Hi Mathias,
I was using (up until today) v3.13 (on my desktop PC) to test LPM
transitions against OMAP5. Since I was having some issues with U1 exit
after some 200 iterations I decided to make sure v3.15-rc4 would have
the same behavior but, to my surprise, xHCI doesn't do any LPM
transitions anymore.
What changed since v3.13 ? Why aren't LPM transitions enabled anymore ?
I _do_ have an Intel chipset so XHCI_LPM_SUPPORT should be set.
Any ideas ?
I think these patches could be related:
commit 25cd2882e2fc8bd8ed7acaee0ec979f11feda6d7
usb/xhci: Change how we indicate a host supports Link PM.
commit 140e3026a57ab7d830dab2f2c57796c222db0ea9
Revert "usbcore: set lpm_capable field for LPM capable root hubs"
Both of them are added after 3.13, and do additional checking before setting
udev->lpm_capable
-Mathias
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