#a m-ric <emeric.vig...@gmail.com> wrote:
>"might getting change"? What is that supposed to mean? > >Emeric > >On Sunday, September 30, 2012 11:35:26 AM UTC-4, satish wrote: >> >> Check the dirty ration while USB transfer. It might getting change.. >> >> On Fri, Sep 28, 2012 at 7:19 PM, m-ric <emeric...@gmail.com >> <javascript:>>wrote: >> >>> Good to know someone shares the problem. I posted on pretty much all the >>> mailng list I know, without any "me too" effect. >>> I have not fixed this issue yet. I know it is related to USB host driver >>> (ehci-omap.c) because USB mass storage - panda being the host, usb stick >>> being the device - also has transfer issue (Write). An interrupt is not >>> fired properly in TX, RX is fine. I will resume my investigation not >>> before the end of october. >>> >>> Post in here if you make any progress in the meantime. >>> >>> Thanks, >>> Emeric >>> >>> >>> On Friday, September 28, 2012 4:19:22 AM UTC-4, Sagar Shinde wrote: >>>> >>>> Hi, >>>> We are facing the same issue. >>>> Did you get any solution for this? >>>> >>>> Thanks in advance. >>>> BR >>>> Sagar >>>> sangi.hs_gmail.com >>>> >>>> On Thursday, July 12, 2012 10:26:32 PM UTC+3, m-ric wrote: >>>>> >>>>> Hi, >>>>> >>>>> I run AOSP-4.0.4 on a pandaboard rev A3. I got linux kernel from >>>>> remotes/android-omap/android-**omap-panda-3.0 branch, 52f4764 commit >>>>> "Revert gpu: pvr: Revert to 1.8@550175". >>>>> >>>>> With this software: >>>>> 1. Ethernet bandwidth is very low, barely usable for file transfers. >>>>> TX gets stuck, I measured 20KBps. RX is quite slow too. >>>>> 2. USB storage on USB host port suffers same limitations. I measured >>>>> ~100KBps. >>>>> >>>>> Problem is known though, fedora- and ubuntu guys saw it: >>>>> http://article.gmane.org/**gmane.linux.redhat.fedora.arm/**1266<http://article.gmane.org/gmane.linux.redhat.fedora.arm/1266> >>>>> >>>>> https://bugs.launchpad.net/**linux-linaro/+bug/709245<https://bugs.launchpad.net/linux-linaro/+bug/709245> >>>>> >>>>> >>>>> My kernel embeds Ming Lei's barrier patch in ehci-q.c: >>>>> usb: ehci: make HC see up-to-date qh/qtd descriptor ASAP >>>>> and Will Deacon's ARM errata CONFIG_PL310_ERRATA_769419: >>>>> ARM: 7161/1: errata: no automatic store buffer drain >>>>> I checked that asm on this latter commit is fine (dsb instr.). >>>>> >>>>> Still above bugs are still present. For fedora and ubuntu guys though, >>>>> above fixes have solved the problem. >>>>> I am reluctant to change my (entire) kernel because everything else >>>>> that I need works fine. I am in a maturation phase, not in a >>>>> development phase anymore. >>>>> >>>>> Does anyone experience that on pandaboard and aosp? >>>>> Did you find any workaround? >>>>> >>>>> I have been on this bug for 4 weeks now. I am kind of desperate right >>>>> now. >>>> >>>> -- >>> unsubscribe: android-kerne...@googlegroups.com <javascript:> >>> website: http://groups.google.com/group/android-kernel >>> >> >> >> >> -- >> Regards, >> satish patel >> > >-- >unsubscribe: android-kernel+unsubscr...@googlegroups.com >website: http://groups.google.com/group/android-kernel -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
