Hello Taeung, On Tue, Jun 24, 2014 at 6:22 PM, Greg KH <greg@xxxxxxxxx> wrote: > On Tue, Jun 24, 2014 at 09:31:55PM +0900, Taeung wrote: >> Hello, linux-usb >> >> I have a question about USB 3.0. >> Please help me. >> >> I'm using SMDK5250 hardware and linux-3.0.31. > > Why not try using a modern kernel version, like 3.15, first? 3.0 is > very old and obsolete, please don't try to bring up new hardware on such > an old kernel version. I agree with Greg. Testing things on such an old kernel won't be able to give a clear picture of what's going wrong. Please try with the newer version of kernel like Greg suggested. We maintain support for USB on Exynos5250, and would be happy to help you out with any issue. -- Best Regards Vivek Gautam Samsung R&D Institute, Bangalore India -- 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