| Message ID | 20211120000250.1663391-24-ben.widawsky@intel.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
| Series | Add drivers for CXL ports and mem devices | expand |
On Fri, 19 Nov 2021 16:02:50 -0800 Ben Widawsky <ben.widawsky@intel.com> wrote: > Switches aren't supported by the region driver yet. If a device finds > itself under a switch it will not bind a driver so that it cannot be > used later for region creation/configuration. What's the reasoning in have this in this patch set rather than the region one? I was rather hoping you'd have it working when the region set is ready :) Jonathan > > Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> > --- > drivers/cxl/mem.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c > index e954144af4b8..997898e78d63 100644 > --- a/drivers/cxl/mem.c > +++ b/drivers/cxl/mem.c > @@ -155,6 +155,11 @@ static int cxl_mem_probe(struct device *dev) > goto out; > } > > + /* FIXME: Add true switch support */ > + dev_err(dev, "Devices behind switches are currently unsupported\n"); > + rc = -ENODEV; > + goto err_out; > + > /* Walk down from the root port and add all switches */ > cxl_scan_ports(ctx.root_port); >
On 21-11-22 18:19:01, Jonathan Cameron wrote: > On Fri, 19 Nov 2021 16:02:50 -0800 > Ben Widawsky <ben.widawsky@intel.com> wrote: > > > Switches aren't supported by the region driver yet. If a device finds > > itself under a switch it will not bind a driver so that it cannot be > > used later for region creation/configuration. > > What's the reasoning in have this in this patch set rather than the region one? > > I was rather hoping you'd have it working when the region set is ready :) > > Jonathan > I'm uncomfortable enabling it until I actually have an environment to test it in. If Dan et al. don't mind however, I can drop this patch. > > > > Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> > > --- > > drivers/cxl/mem.c | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c > > index e954144af4b8..997898e78d63 100644 > > --- a/drivers/cxl/mem.c > > +++ b/drivers/cxl/mem.c > > @@ -155,6 +155,11 @@ static int cxl_mem_probe(struct device *dev) > > goto out; > > } > > > > + /* FIXME: Add true switch support */ > > + dev_err(dev, "Devices behind switches are currently unsupported\n"); > > + rc = -ENODEV; > > + goto err_out; > > + > > /* Walk down from the root port and add all switches */ > > cxl_scan_ports(ctx.root_port); > > >
diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c index e954144af4b8..997898e78d63 100644 --- a/drivers/cxl/mem.c +++ b/drivers/cxl/mem.c @@ -155,6 +155,11 @@ static int cxl_mem_probe(struct device *dev) goto out; } + /* FIXME: Add true switch support */ + dev_err(dev, "Devices behind switches are currently unsupported\n"); + rc = -ENODEV; + goto err_out; + /* Walk down from the root port and add all switches */ cxl_scan_ports(ctx.root_port);
Switches aren't supported by the region driver yet. If a device finds itself under a switch it will not bind a driver so that it cannot be used later for region creation/configuration. Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> --- drivers/cxl/mem.c | 5 +++++ 1 file changed, 5 insertions(+)