On Mon, 2019-06-10 at 23:03 +0800, Ming Lei wrote:
> The current way isn't safe for chained sgl, so use sgl helper to
> operate sgl.
The advansys driver doesn't currently use a chained scatterlist. In
theory it could; the
if (shost->sg_tablesize > SG_ALL) {
shost->sg_tablesize = SG_ALL;
}
At around line 11226 is what prevents it and that could be eliminated
provided someone actually has the hardware to test.
However, provided drivers make the correct SG_ALL or less declaration,
they're entitled to treat scatterlists as fully contiguous, so there's
no real justification (beyond uniformity) for making it use the chain
helpers.
James
