On Thu, 01 Dec 2022 14:03:24 -0800
Dan Williams <dan.j.williams@xxxxxxxxx> wrote:
> cxl_region_probe() allows for regions not in the 'commit' state to be
> enabled. Fail probe when the region is not committed otherwise the
> kernel may indicate that an address range is active when none of the
> decoders are active.
>
> Fixes: 8d48817df6ac ("cxl/region: Add region driver boiler plate")
> Cc: <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Huh. I wonder why this wasn't triggering a build warning given
rc is assigned but unused.
Ah well, this is clearly the original intent and makes sense.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
> ---
> drivers/cxl/core/region.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> index f9ae5ad284ff..1bc2ebefa2a5 100644
> --- a/drivers/cxl/core/region.c
> +++ b/drivers/cxl/core/region.c
> @@ -1923,6 +1923,9 @@ static int cxl_region_probe(struct device *dev)
> */
> up_read(&cxl_region_rwsem);
>
> + if (rc)
> + return rc;
> +
> switch (cxlr->mode) {
> case CXL_DECODER_PMEM:
> return devm_cxl_add_pmem_region(cxlr);
>
