On Mon, 2010-02-22 at 18:20 +0530, Ramya Desai wrote: > On Fri, Feb 19, 2010 at 7:56 PM, James Bottomley > <James.Bottomley@xxxxxxx> wrote: > > > Before we get into that, what architecture is this? There are a few, > > like arm that don't have architecture support for chaining, so they can > > never go over 128 segments. > > I am using the desktop PC to access my device. i.e, Intel processor > with x86 architecture. OK, so now see what max_hw_sectors_kb says ... if it's still 512 and you're sure you've got sg_tablesize set to something higher, there's likely something in the USB stack resetting it ... I suppose it's possible there's something else in your kernel doing that for the architecture, but you could rule that out by looking at max_hw_sectors_kb for either a SCSI or libata device and verifying it's much higher than 512. James -- 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
