Hi All!

I have been experiencing problems with CS8900A driver under heavy network load.
On occasion the driver would discard the TX frame because CS8900A
won't immediatly
signal TxRDY - if there is not enough space inside hardware buffers.
After the TX frame is
discarded the driver still waits 250ms for TX done event! In my case
this can happen often
and in a row...

The right thing to do in this case is to offload the RX frames making
space for the TX frame -
TxRDY will be issued afterwards.

The attached patch does this by storing the sg_list internally if the
TxRDY is not obtained
immediately and returns the control to the upper layers. The network
stack can then read the
RX frames from CS8900A which will also trigger TxRDY signal. The
driver will now handle this
signal by coping previously stored sg_list into hardware buffers
starting the transmission.

Regards,
Savin Zlobec