On Tue, May 29, 2007 at 06:21:36PM +0200, Geert Uytterhoeven wrote:
> On Tue, 29 May 2007, Christoph Hellwig wrote:
> > > +/*
> > > + * copy data from device into scatter/gather buffer
> > > + */
> > > +static int fill_from_dev_buffer(struct scsi_cmnd *cmd, const void *buf,
> > > + int buflen)
> > > +{
> > > + int k, req_len, act_len, len, active;
> > > + void *kaddr;
> > > + struct scatterlist *sgpnt;
> > > +
> > > + if (!cmd->request_bufflen)
> > > + return 0;
> > > +
> > > + if (!cmd->request_buffer)
> > > + return DID_ERROR << 16;
> > > +
> > > + if (cmd->sc_data_direction != DMA_BIDIRECTIONAL &&
> > > + cmd->sc_data_direction != DMA_FROM_DEVICE)
> > > + return DID_ERROR << 16;
> > > +
> > > + if (!cmd->use_sg) {
> > > + req_len = cmd->request_bufflen;
> > > + act_len = min(req_len, buflen);
> > > + memcpy(cmd->request_buffer, buf, act_len);
> > > + cmd->resid = req_len - act_len;
> > > + return 0;
> > > + }
> >
> > This is never true anymore.
>
> Just to be sure: all four if-cases or only the last one?
That's just in reference to the last one. The checks above could
be condensed a little more aswell, but I'll comment on further in
the second round of review, in the hope that the command submission
path is a lot more streamline by then already.
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