[PATCH] nvdimm: Fix badblocks clear off-by-one error

[Dan Williams]

From: Chris Ye <chris...@intel.com>

nvdimm_clear_badblocks_region() validates badblock clearing requests
against the span of the region, however it compares the inclusive
badblock request range to the exclusive region range. Fix up the
off-by-one error.

Fixes: 23f498448362 ("libnvdimm: rework region badblocks clearing")
Cc: <sta...@vger.kernel.org>
Signed-off-by: Chris Ye <chris...@intel.com>
Signed-off-by: Dan Williams <dan.j.willi...@intel.com>
---
 drivers/nvdimm/bus.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 7b0d1443217a..5db16857b80e 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -182,8 +182,8 @@ static int nvdimm_clear_badblocks_region(struct device 
*dev, void *data)
        ndr_end = nd_region->ndr_start + nd_region->ndr_size - 1;
 
        /* make sure we are in the region */
-       if (ctx->phys < nd_region->ndr_start
-                       || (ctx->phys + ctx->cleared) > ndr_end)
+       if (ctx->phys < nd_region->ndr_start ||
+           (ctx->phys + ctx->cleared - 1) > ndr_end)
                return 0;
 
        sector = (ctx->phys - nd_region->ndr_start) / 512;