On Sun, 11 Oct 2026 21:18:57 +0800 [email protected] wrote: > From: Jianyun Gao <[email protected]> > > When the region driver is not loaded, mapping_store() returns rc > which is 0 at that point, instead of an error code. Set it to > -ENXIO to match the equivalent check in size_store(). > > Fixes: 9567da0b408a ("device-dax: Introduce bus + driver model") > Signed-off-by: Jianyun Gao <[email protected]>
Looks correct to me. Reviewed-by: Jonathan Cameron <[email protected]> I'm curious, found by inspection or some tool? J > --- > drivers/dax/bus.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c > index b809e1a264af..262f97b5e7aa 100644 > --- a/drivers/dax/bus.c > +++ b/drivers/dax/bus.c > @@ -1192,7 +1192,7 @@ static ssize_t mapping_store(struct device *dev, struct > device_attribute *attr, > return rc; > if (!dax_region->dev->driver) { > up_write(&dax_region_rwsem); > - return rc; > + return -ENXIO; > } > rc = down_write_killable(&dax_dev_rwsem); > if (rc) {
