I don't understand the function qset_add_urb_sg. As far as I can tell,
the variable std is NULL until reaching the following code:
if (!std
|| (prev_end & (WHCI_PAGE_SIZE-1))
|| (dma_addr & (WHCI_PAGE_SIZE-1))
|| std->len + WHCI_PAGE_SIZE > QTD_MAX_XFER_SIZE) {
if (std->len % qset->max_packet != 0)
return -EINVAL;
std = qset_new_std(whc, qset, urb, mem_flags);
if (std == NULL) {
return -ENOMEM;
}
ntds++;
p = 0;
}
The it crashes on the first inner if. Indeed, it seems that the only way
the function can work is if remaining is 0, in which case the entire
for_each_sg is useless. But perhaps I am missing something?
julia
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