Adding linux-usb-devel, as that's the proper place for it, not
linux-usb-users...

On Sat, Mar 04, 2006 at 12:41:58PM -0000, deepak  madhu wrote:
> Hi Greg,
> I am writing a simple usb class driver for uss2828 chip in mandrake
> 10.1 (2.6.8 kernel ).

What kind of class driver?  What kind of chip is this?

> I am using usb-skeleton driver as the reference for this. In the
> usb-skeleton driver i have changed only the productid and the vendorid
> and i am able to probe the device and get the bulk endpoints whose
> size is 64 bytes.

What kernel version did you base the driver off of?  I would recommend
the latest 2.6.15 version as there were some bugs in the older versions
on detecting the proper endpoints.

> The problem what I am facing is when I open the device and write to
> the device through the  bulkout endpoint,after submitting the urb the
> write callback handler was called and first write was sucessfull.When
> I wrote for the second time to the same device through the same
> endpoint after submitting the urb the write callback handler was not
> called but return value of the usb_submit is 0 and it is not giving
> any error.

Are you sure your device will allow this kind of interaction to work
properly?

thanks,

greg k-h


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