On Mon, 16 May 2011, Nguyen Dinh-R00091 wrote: > Hi, > > On the Freescale i.MX35 3DS board, there is a total of 256MB of DDR2 and the configuration is 128MB on Chip-select 0 and 128MB on chip-select 1. So physically, the memory is not contiguous, so we boot up the system with these mem= parameters(mem=128M@0x80000000 mem=128M@0x90000000). The system seems to be operating fine and passes stress testing using memtester and oprofile, except for USB. > > Running a USB copy stress test on USB mass storage between a USB HDD and an SD/MMC card causes the system to hang. The hang can occur at any time between 10 minutes to 2 hours. The hang is much harder to re-create if logs or delays are introduced. Your test involves both the USB and MMC subsystems. How can you tell which one is responsible for the hang? Have you tried testing these subsystems one at a 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
