4.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vishal Verma <vishal.l.verma@xxxxxxxxx> commit 7e5a21dfe5524a85705d3bc7b540c849cc13e9a1 upstream. A leftover from the 'bandaid' fix that disabled BTT error clearing in rw_bytes resulted in an incorrect check. After we converted these checks over to use the NVDIMM_IO_ATOMIC flag, the ndns->claim check was both redundant, and incorrect. Remove it. Fixes: 3ae3d67ba705 ("libnvdimm: add an atomic vs process context flag to rw_bytes") Cc: Dave Jiang <dave.jiang@xxxxxxxxx> Cc: Dan Williams <dan.j.williams@xxxxxxxxx> Signed-off-by: Vishal Verma <vishal.l.verma@xxxxxxxxx> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/nvdimm/claim.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -260,8 +260,7 @@ static int nsio_rw_bytes(struct nd_names * work around this collision. */ if (IS_ALIGNED(offset, 512) && IS_ALIGNED(size, 512) - && !(flags & NVDIMM_IO_ATOMIC) - && !ndns->claim) { + && !(flags & NVDIMM_IO_ATOMIC)) { long cleared; cleared = nvdimm_clear_poison(&ndns->dev,