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-rw-r--r--drivers/acpi/nfit/core.c28
-rw-r--r--drivers/acpi/nfit/intel.c59
-rw-r--r--drivers/acpi/nfit/nfit.h24
3 files changed, 70 insertions, 41 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index c02fa27dd3f3..1413324982f0 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1282,7 +1282,7 @@ static ssize_t hw_error_scrub_store(struct device *dev,
if (rc)
return rc;
- device_lock(dev);
+ nfit_device_lock(dev);
nd_desc = dev_get_drvdata(dev);
if (nd_desc) {
struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
@@ -1299,7 +1299,7 @@ static ssize_t hw_error_scrub_store(struct device *dev,
break;
}
}
- device_unlock(dev);
+ nfit_device_unlock(dev);
if (rc)
return rc;
return size;
@@ -1319,7 +1319,7 @@ static ssize_t scrub_show(struct device *dev,
ssize_t rc = -ENXIO;
bool busy;
- device_lock(dev);
+ nfit_device_lock(dev);
nd_desc = dev_get_drvdata(dev);
if (!nd_desc) {
device_unlock(dev);
@@ -1339,7 +1339,7 @@ static ssize_t scrub_show(struct device *dev,
}
mutex_unlock(&acpi_desc->init_mutex);
- device_unlock(dev);
+ nfit_device_unlock(dev);
return rc;
}
@@ -1356,14 +1356,14 @@ static ssize_t scrub_store(struct device *dev,
if (val != 1)
return -EINVAL;
- device_lock(dev);
+ nfit_device_lock(dev);
nd_desc = dev_get_drvdata(dev);
if (nd_desc) {
struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
rc = acpi_nfit_ars_rescan(acpi_desc, ARS_REQ_LONG);
}
- device_unlock(dev);
+ nfit_device_unlock(dev);
if (rc)
return rc;
return size;
@@ -1749,9 +1749,9 @@ static void acpi_nvdimm_notify(acpi_handle handle, u32 event, void *data)
struct acpi_device *adev = data;
struct device *dev = &adev->dev;
- device_lock(dev->parent);
+ nfit_device_lock(dev->parent);
__acpi_nvdimm_notify(dev, event);
- device_unlock(dev->parent);
+ nfit_device_unlock(dev->parent);
}
static bool acpi_nvdimm_has_method(struct acpi_device *adev, char *method)
@@ -3457,8 +3457,8 @@ static int acpi_nfit_flush_probe(struct nvdimm_bus_descriptor *nd_desc)
struct device *dev = acpi_desc->dev;
/* Bounce the device lock to flush acpi_nfit_add / acpi_nfit_notify */
- device_lock(dev);
- device_unlock(dev);
+ nfit_device_lock(dev);
+ nfit_device_unlock(dev);
/* Bounce the init_mutex to complete initial registration */
mutex_lock(&acpi_desc->init_mutex);
@@ -3602,8 +3602,8 @@ void acpi_nfit_shutdown(void *data)
* acpi_nfit_ars_rescan() submissions have had a chance to
* either submit or see ->cancel set.
*/
- device_lock(bus_dev);
- device_unlock(bus_dev);
+ nfit_device_lock(bus_dev);
+ nfit_device_unlock(bus_dev);
flush_workqueue(nfit_wq);
}
@@ -3746,9 +3746,9 @@ EXPORT_SYMBOL_GPL(__acpi_nfit_notify);
static void acpi_nfit_notify(struct acpi_device *adev, u32 event)
{
- device_lock(&adev->dev);
+ nfit_device_lock(&adev->dev);
__acpi_nfit_notify(&adev->dev, adev->handle, event);
- device_unlock(&adev->dev);
+ nfit_device_unlock(&adev->dev);
}
static const struct acpi_device_id acpi_nfit_ids[] = {
diff --git a/drivers/acpi/nfit/intel.c b/drivers/acpi/nfit/intel.c
index cddd0fcf622c..1113b679cd7b 100644
--- a/drivers/acpi/nfit/intel.c
+++ b/drivers/acpi/nfit/intel.c
@@ -7,10 +7,11 @@
#include "intel.h"
#include "nfit.h"
-static enum nvdimm_security_state intel_security_state(struct nvdimm *nvdimm,
+static unsigned long intel_security_flags(struct nvdimm *nvdimm,
enum nvdimm_passphrase_type ptype)
{
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
+ unsigned long security_flags = 0;
struct {
struct nd_cmd_pkg pkg;
struct nd_intel_get_security_state cmd;
@@ -27,7 +28,7 @@ static enum nvdimm_security_state intel_security_state(struct nvdimm *nvdimm,
int rc;
if (!test_bit(NVDIMM_INTEL_GET_SECURITY_STATE, &nfit_mem->dsm_mask))
- return -ENXIO;
+ return 0;
/*
* Short circuit the state retrieval while we are doing overwrite.
@@ -35,38 +36,42 @@ static enum nvdimm_security_state intel_security_state(struct nvdimm *nvdimm,
* until the overwrite DSM completes.
*/
if (nvdimm_in_overwrite(nvdimm) && ptype == NVDIMM_USER)
- return NVDIMM_SECURITY_OVERWRITE;
+ return BIT(NVDIMM_SECURITY_OVERWRITE);
rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
- if (rc < 0)
- return rc;
- if (nd_cmd.cmd.status)
- return -EIO;
+ if (rc < 0 || nd_cmd.cmd.status) {
+ pr_err("%s: security state retrieval failed (%d:%#x)\n",
+ nvdimm_name(nvdimm), rc, nd_cmd.cmd.status);
+ return 0;
+ }
/* check and see if security is enabled and locked */
if (ptype == NVDIMM_MASTER) {
if (nd_cmd.cmd.extended_state & ND_INTEL_SEC_ESTATE_ENABLED)
- return NVDIMM_SECURITY_UNLOCKED;
- else if (nd_cmd.cmd.extended_state &
- ND_INTEL_SEC_ESTATE_PLIMIT)
- return NVDIMM_SECURITY_FROZEN;
- } else {
- if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_UNSUPPORTED)
- return -ENXIO;
- else if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_ENABLED) {
- if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_LOCKED)
- return NVDIMM_SECURITY_LOCKED;
- else if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_FROZEN
- || nd_cmd.cmd.state &
- ND_INTEL_SEC_STATE_PLIMIT)
- return NVDIMM_SECURITY_FROZEN;
- else
- return NVDIMM_SECURITY_UNLOCKED;
- }
+ set_bit(NVDIMM_SECURITY_UNLOCKED, &security_flags);
+ else
+ set_bit(NVDIMM_SECURITY_DISABLED, &security_flags);
+ if (nd_cmd.cmd.extended_state & ND_INTEL_SEC_ESTATE_PLIMIT)
+ set_bit(NVDIMM_SECURITY_FROZEN, &security_flags);
+ return security_flags;
}
- /* this should cover master security disabled as well */
- return NVDIMM_SECURITY_DISABLED;
+ if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_UNSUPPORTED)
+ return 0;
+
+ if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_ENABLED) {
+ if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_FROZEN ||
+ nd_cmd.cmd.state & ND_INTEL_SEC_STATE_PLIMIT)
+ set_bit(NVDIMM_SECURITY_FROZEN, &security_flags);
+
+ if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_LOCKED)
+ set_bit(NVDIMM_SECURITY_LOCKED, &security_flags);
+ else
+ set_bit(NVDIMM_SECURITY_UNLOCKED, &security_flags);
+ } else
+ set_bit(NVDIMM_SECURITY_DISABLED, &security_flags);
+
+ return security_flags;
}
static int intel_security_freeze(struct nvdimm *nvdimm)
@@ -371,7 +376,7 @@ static void nvdimm_invalidate_cache(void)
#endif
static const struct nvdimm_security_ops __intel_security_ops = {
- .state = intel_security_state,
+ .get_flags = intel_security_flags,
.freeze = intel_security_freeze,
.change_key = intel_security_change_key,
.disable = intel_security_disable,
diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h
index 6ee2b02af73e..24241941181c 100644
--- a/drivers/acpi/nfit/nfit.h
+++ b/drivers/acpi/nfit/nfit.h
@@ -312,6 +312,30 @@ static inline struct acpi_nfit_desc *to_acpi_desc(
return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
}
+#ifdef CONFIG_PROVE_LOCKING
+static inline void nfit_device_lock(struct device *dev)
+{
+ device_lock(dev);
+ mutex_lock(&dev->lockdep_mutex);
+}
+
+static inline void nfit_device_unlock(struct device *dev)
+{
+ mutex_unlock(&dev->lockdep_mutex);
+ device_unlock(dev);
+}
+#else
+static inline void nfit_device_lock(struct device *dev)
+{
+ device_lock(dev);
+}
+
+static inline void nfit_device_unlock(struct device *dev)
+{
+ device_unlock(dev);
+}
+#endif
+
const guid_t *to_nfit_uuid(enum nfit_uuids id);
int acpi_nfit_init(struct acpi_nfit_desc *acpi_desc, void *nfit, acpi_size sz);
void acpi_nfit_shutdown(void *data);
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