Hi Alan, > This patch (as1663) fixes a regression caused by commit > 6e0c3339a6f19d748f16091d0a05adeb1e1f822b (USB: EHCI: unlink one async > QH at a time). > [...] > The symptom is that when the root hub is resumed, USB communications > don't work for some period of time. This is because ehci-hcd doesn't > realize it needs to restart the async schedule; it assumes that > because some QHs are already on the schedule, the schedule must be > running. This fix helps to solve a 100% reproducible hang on suspend-to-disk on my Thinkpad X201 (which occured only when there was an SD card in the slot, things worked flawless otherwise). I bisected the issue to the same commit you mention above, only to find this patch in 3.9-rc4 after that :-S Anyway, just FYI. Gr. Matthijs -- 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
