Dears, yes, we had did the test to confirm where takes more time. the location is scan_periodic for loop and in while loop case QH. after apply the patch from you, it seems fix the issue, But I worry the side effect if the line I mentioned will not be applied. do you have idea about my meaning? thanks best regards, Brad ________________________________________ From: linux-usb-owner@xxxxxxxxxxxxxxx [linux-usb-owner@xxxxxxxxxxxxxxx] On Behalf Of Alan Stern [stern@xxxxxxxxxxxxxxxxxxx] Sent: Friday, March 25, 2011 11:52 PM To: BradHuang Cc: USB list Subject: RE: ehci scan_periodic loop time On Fri, 25 Mar 2011, BradHuang wrote: > Dears, > > the code of usbsub system we used is 2.6.34. > I got the patch from you in previous e-mails, the patch is not offical version, just for test that you said . > we will not use new kerenl version because there are a lot of difference, > it is make sense to patch for bug fix currently, > Could you help to explain the condition about I mentioned in last e-mail? What condition? I did not understand your question. Have you done more testing to find out what routine takes so much time? Alan Stern -- 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-- 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
