On Fri, 12 May 2006, Vivek Dharmadhikari wrote: > > Hello All > > I have ported linux 2.6.12 USB driver to 200MHz MIPS SOC with synopsys > USB 2.0 block. The USB block is NOT interfaced using PCI therefore I > used platform glue structure to port the driver. The driver is now > working. > > I am facing issues when using a 2.0 external HARD disk or flash drive. I > can copy small files(less than 500k) to and from the disk without any > issues. Large file transfer(greater than 1MByts)takes long time to > finish and as a result the console gets locked giving impression that > USB is hanging. Attempts to do file transfer larger than 50MBytes > results in bus reset message by the driver. During the file transfer > scsi_eh_0 and usb-storage alternates between S and D state as reported > by top command. The endpoints are halted and cleared during transfer as > is evident from dmesg below.
... > Is this a known issue in 2.6.12 series usb driver ? When you mount the USB drive, do you use the "-o sync" option? That could cause the delays and the errors that you see. They are not caused by problems in the 2.6.12 USB drivers. (Well, some of the delays are caused by the driver -- but they wouldn't be there if no errors occurred.) Alan Stern ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
