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authorDan Williams <dan.j.williams@intel.com>2017-09-24 09:57:34 -0700
committerDan Williams <dan.j.williams@intel.com>2017-10-07 10:03:40 -0700
commit4b27db7e26cdb9deb4a211e963e2993fde0110cb (patch)
treeb730464ad24dbd0ac015bc214aad91ea02766586 /drivers/nvdimm
parent10246dc84dfcabb05f2d29d442c9de967fd61270 (diff)
downloadlinux-4b27db7e26cdb9deb4a211e963e2993fde0110cb.tar.bz2
acpi, nfit: add support for the _LSI, _LSR, and _LSW label methods
ACPI 6.2 adds support for named methods to access the label storage area of an NVDIMM. We prefer these new methods if available and otherwise fallback to the NVDIMM_FAMILY_INTEL _DSMs. The kernel ioctls, ND_IOCTL_{GET,SET}_CONFIG_{SIZE,DATA}, remain generic and the driver translates the 'package' payloads into the NVDIMM_FAMILY_INTEL 'buffer' format to maintain compatibility with existing userspace and keep the output buffer parsing code in the driver common. The output payloads are mostly compatible save for the 'label area locked' status that moves from the 'config_size' (_LSI) command to the 'config_read' (_LSR) command status. Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
-rw-r--r--drivers/nvdimm/dimm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvdimm/dimm.c b/drivers/nvdimm/dimm.c
index 98466d762c8f..f8913b8124b6 100644
--- a/drivers/nvdimm/dimm.c
+++ b/drivers/nvdimm/dimm.c
@@ -55,6 +55,8 @@ static int nvdimm_probe(struct device *dev)
goto err;
rc = nvdimm_init_config_data(ndd);
+ if (rc == -EACCES)
+ nvdimm_set_locked(dev);
if (rc)
goto err;