[PATCH v1 05/10] ACPI: switch to use generic UUID API

From: Andy Shevchenko
Date: Wed Feb 17 2016 - 07:19:05 EST

Instead of opencoding the existing library functions let's use them directly.

The conversion fixes a potential bug in int340x_thermal as well since we have
to use memcmp() on binary data.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/acpi/acpi_extlog.c | 8 +++---
drivers/acpi/bus.c | 29 ++-----------------
drivers/acpi/nfit.c | 34 +++++++++++------------
drivers/acpi/nfit.h | 3 +-
drivers/acpi/utils.c | 4 +--
drivers/char/tpm/tpm_crb.c | 9 +++---
drivers/char/tpm/tpm_ppi.c | 20 ++++++-------
drivers/gpu/drm/i915/intel_acpi.c | 14 ++++------
drivers/gpu/drm/nouveau/nouveau_acpi.c | 20 ++++++-------
drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c | 9 +++---
drivers/hid/i2c-hid/i2c-hid.c | 9 +++---
drivers/iommu/dmar.c | 11 ++++----
drivers/pci/pci-acpi.c | 11 ++++----
drivers/pci/pci-label.c | 4 +--
drivers/thermal/int340x_thermal/int3400_thermal.c | 6 ++--
drivers/usb/host/xhci-pci.c | 9 +++---
include/acpi/acpi_bus.h | 10 ++++---
include/linux/acpi.h | 2 +-
include/linux/pci-acpi.h | 2 +-
sound/soc/intel/skylake/skl-nhlt.c | 7 +++--
20 files changed, 92 insertions(+), 129 deletions(-)

diff --git a/drivers/acpi/acpi_extlog.c b/drivers/acpi/acpi_extlog.c
index b3842ff..a3a25ec 100644
--- a/drivers/acpi/acpi_extlog.c
+++ b/drivers/acpi/acpi_extlog.c
@@ -45,7 +45,9 @@ struct extlog_l1_head {

static int old_edac_report_status;

-static u8 extlog_dsm_uuid[] __initdata = "663E35AF-CC10-41A4-88EA-5470AF055295";
+static uuid_le extlog_dsm_uuid __initdata =
+ UUID_LE(0x663E35AF, 0xCC10, 0x41A4,
+ 0x88, 0xEA, 0x54, 0x70, 0xAF, 0x05, 0x52, 0x95);

/* L1 table related physical address */
static u64 elog_base;
@@ -182,12 +184,10 @@ out:

static bool __init extlog_get_l1addr(void)
{
- u8 uuid[16];
+ uuid_le *uuid = &extlog_dsm_uuid;
acpi_handle handle;
union acpi_object *obj;

- acpi_str_to_uuid(extlog_dsm_uuid, uuid);
-
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return false;
if (!acpi_check_dsm(handle, uuid, EXTLOG_DSM_REV, 1 << EXTLOG_FN_ADDR))
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 891c42d..80db48b 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -192,42 +192,19 @@ static void acpi_print_osc_error(acpi_handle handle,
printk("\n");
}

-acpi_status acpi_str_to_uuid(char *str, u8 *uuid)
-{
- int i;
- static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21,
- 24, 26, 28, 30, 32, 34};
-
- if (strlen(str) != 36)
- return AE_BAD_PARAMETER;
- for (i = 0; i < 36; i++) {
- if (i == 8 || i == 13 || i == 18 || i == 23) {
- if (str[i] != '-')
- return AE_BAD_PARAMETER;
- } else if (!isxdigit(str[i]))
- return AE_BAD_PARAMETER;
- }
- for (i = 0; i < 16; i++) {
- uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4;
- uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]);
- }
- return AE_OK;
-}
-EXPORT_SYMBOL_GPL(acpi_str_to_uuid);
-
acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
{
acpi_status status;
struct acpi_object_list input;
union acpi_object in_params[4];
union acpi_object *out_obj;
- u8 uuid[16];
+ uuid_le uuid;
u32 errors;
struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};

if (!context)
return AE_ERROR;
- if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid)))
+ if (uuid_le_to_bin(context->uuid_str, &uuid))
return AE_ERROR;
context->ret.length = ACPI_ALLOCATE_BUFFER;
context->ret.pointer = NULL;
@@ -237,7 +214,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
input.pointer = in_params;
in_params[0].type = ACPI_TYPE_BUFFER;
in_params[0].buffer.length = 16;
- in_params[0].buffer.pointer = uuid;
+ in_params[0].buffer.pointer = (char *)&uuid;
in_params[1].type = ACPI_TYPE_INTEGER;
in_params[1].integer.value = context->rev;
in_params[2].type = ACPI_TYPE_INTEGER;
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c
index ad6d8c6..3beb99b 100644
--- a/drivers/acpi/nfit.c
+++ b/drivers/acpi/nfit.c
@@ -43,11 +43,11 @@ struct nfit_table_prev {
struct list_head flushes;
};

-static u8 nfit_uuid[NFIT_UUID_MAX][16];
+static uuid_le nfit_uuid[NFIT_UUID_MAX];

-const u8 *to_nfit_uuid(enum nfit_uuids id)
+const uuid_le *to_nfit_uuid(enum nfit_uuids id)
{
- return nfit_uuid[id];
+ return &nfit_uuid[id];
}
EXPORT_SYMBOL(to_nfit_uuid);

@@ -83,7 +83,7 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc,
const char *cmd_name, *dimm_name;
unsigned long dsm_mask;
acpi_handle handle;
- const u8 *uuid;
+ const uuid_le *uuid;
u32 offset;
int rc, i;

@@ -225,7 +225,7 @@ static int nfit_spa_type(struct acpi_nfit_system_address *spa)
int i;

for (i = 0; i < NFIT_UUID_MAX; i++)
- if (memcmp(to_nfit_uuid(i), spa->range_guid, 16) == 0)
+ if (!uuid_le_cmp(*to_nfit_uuid(i), *(uuid_le *)spa->range_guid))
return i;
return -1;
}
@@ -829,7 +829,7 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
{
struct acpi_device *adev, *adev_dimm;
struct device *dev = acpi_desc->dev;
- const u8 *uuid = to_nfit_uuid(NFIT_DEV_DIMM);
+ const uuid_le *uuid = to_nfit_uuid(NFIT_DEV_DIMM);
int i;

nfit_mem->dsm_mask = acpi_desc->dimm_dsm_force_en;
@@ -909,7 +909,7 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
{
struct nvdimm_bus_descriptor *nd_desc = &acpi_desc->nd_desc;
- const u8 *uuid = to_nfit_uuid(NFIT_DEV_BUS);
+ const uuid_le *uuid = to_nfit_uuid(NFIT_DEV_BUS);
struct acpi_device *adev;
int i;

@@ -2079,16 +2079,16 @@ static __init int nfit_init(void)
BUILD_BUG_ON(sizeof(struct acpi_nfit_control_region) != 80);
BUILD_BUG_ON(sizeof(struct acpi_nfit_data_region) != 40);

- acpi_str_to_uuid(UUID_VOLATILE_MEMORY, nfit_uuid[NFIT_SPA_VOLATILE]);
- acpi_str_to_uuid(UUID_PERSISTENT_MEMORY, nfit_uuid[NFIT_SPA_PM]);
- acpi_str_to_uuid(UUID_CONTROL_REGION, nfit_uuid[NFIT_SPA_DCR]);
- acpi_str_to_uuid(UUID_DATA_REGION, nfit_uuid[NFIT_SPA_BDW]);
- acpi_str_to_uuid(UUID_VOLATILE_VIRTUAL_DISK, nfit_uuid[NFIT_SPA_VDISK]);
- acpi_str_to_uuid(UUID_VOLATILE_VIRTUAL_CD, nfit_uuid[NFIT_SPA_VCD]);
- acpi_str_to_uuid(UUID_PERSISTENT_VIRTUAL_DISK, nfit_uuid[NFIT_SPA_PDISK]);
- acpi_str_to_uuid(UUID_PERSISTENT_VIRTUAL_CD, nfit_uuid[NFIT_SPA_PCD]);
- acpi_str_to_uuid(UUID_NFIT_BUS, nfit_uuid[NFIT_DEV_BUS]);
- acpi_str_to_uuid(UUID_NFIT_DIMM, nfit_uuid[NFIT_DEV_DIMM]);
+ uuid_le_to_bin(UUID_VOLATILE_MEMORY, &nfit_uuid[NFIT_SPA_VOLATILE]);
+ uuid_le_to_bin(UUID_PERSISTENT_MEMORY, &nfit_uuid[NFIT_SPA_PM]);
+ uuid_le_to_bin(UUID_CONTROL_REGION, &nfit_uuid[NFIT_SPA_DCR]);
+ uuid_le_to_bin(UUID_DATA_REGION, &nfit_uuid[NFIT_SPA_BDW]);
+ uuid_le_to_bin(UUID_VOLATILE_VIRTUAL_DISK, &nfit_uuid[NFIT_SPA_VDISK]);
+ uuid_le_to_bin(UUID_VOLATILE_VIRTUAL_CD, &nfit_uuid[NFIT_SPA_VCD]);
+ uuid_le_to_bin(UUID_PERSISTENT_VIRTUAL_DISK, &nfit_uuid[NFIT_SPA_PDISK]);
+ uuid_le_to_bin(UUID_PERSISTENT_VIRTUAL_CD, &nfit_uuid[NFIT_SPA_PCD]);
+ uuid_le_to_bin(UUID_NFIT_BUS, &nfit_uuid[NFIT_DEV_BUS]);
+ uuid_le_to_bin(UUID_NFIT_DIMM, &nfit_uuid[NFIT_DEV_DIMM]);

return acpi_bus_register_driver(&acpi_nfit_driver);
}
diff --git a/drivers/acpi/nfit.h b/drivers/acpi/nfit.h
index 3d549a3..88b73e8 100644
--- a/drivers/acpi/nfit.h
+++ b/drivers/acpi/nfit.h
@@ -16,7 +16,6 @@
#define __NFIT_H__
#include <linux/libnvdimm.h>
#include <linux/types.h>
-#include <linux/uuid.h>
#include <linux/acpi.h>
#include <acpi/acuuid.h>

@@ -180,7 +179,7 @@ static inline struct acpi_nfit_desc *to_acpi_desc(
return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
}

-const u8 *to_nfit_uuid(enum nfit_uuids id);
+const uuid_le *to_nfit_uuid(enum nfit_uuids id);
int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
extern const struct attribute_group *acpi_nfit_attribute_groups[];
#endif /* __NFIT_H__ */
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index f2f9873..a56a995 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -629,7 +629,7 @@ acpi_status acpi_evaluate_lck(acpi_handle handle, int lock)
* some old BIOSes do expect a buffer or an integer etc.
*/
union acpi_object *
-acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid, int rev, int func,
+acpi_evaluate_dsm(acpi_handle handle, const uuid_le *uuid, int rev, int func,
union acpi_object *argv4)
{
acpi_status ret;
@@ -678,7 +678,7 @@ EXPORT_SYMBOL(acpi_evaluate_dsm);
* functions. Currently only support 64 functions at maximum, should be
* enough for now.
*/
-bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs)
+bool acpi_check_dsm(acpi_handle handle, const uuid_le *uuid, int rev, u64 funcs)
{
int i;
u64 mask = 0;
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index 916332c..57e6e82 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -24,10 +24,9 @@

#define ACPI_SIG_TPM2 "TPM2"

-static const u8 CRB_ACPI_START_UUID[] = {
- /* 0000 */ 0xAB, 0x6C, 0xBF, 0x6B, 0x63, 0x54, 0x14, 0x47,
- /* 0008 */ 0xB7, 0xCD, 0xF0, 0x20, 0x3C, 0x03, 0x68, 0xD4
-};
+static const uuid_le crb_acpi_start_uuid =
+ UUID_LE(0x6BBF6CAB, 0x5463, 0x4714,
+ 0xB7, 0xCD, 0xF0, 0x20, 0x3C, 0x03, 0x68, 0xD4);

enum crb_defaults {
CRB_ACPI_START_REVISION_ID = 1,
@@ -127,7 +126,7 @@ static int crb_do_acpi_start(struct tpm_chip *chip)
int rc;

obj = acpi_evaluate_dsm(chip->acpi_dev_handle,
- CRB_ACPI_START_UUID,
+ &crb_acpi_start_uuid,
CRB_ACPI_START_REVISION_ID,
CRB_ACPI_START_INDEX,
NULL);
diff --git a/drivers/char/tpm/tpm_ppi.c b/drivers/char/tpm/tpm_ppi.c
index 692a2c6..7cf6824 100644
--- a/drivers/char/tpm/tpm_ppi.c
+++ b/drivers/char/tpm/tpm_ppi.c
@@ -32,20 +32,16 @@
#define PPI_VS_REQ_START 128
#define PPI_VS_REQ_END 255

-static const u8 tpm_ppi_uuid[] = {
- 0xA6, 0xFA, 0xDD, 0x3D,
- 0x1B, 0x36,
- 0xB4, 0x4E,
- 0xA4, 0x24,
- 0x8D, 0x10, 0x08, 0x9D, 0x16, 0x53
-};
+static const uuid_le tpm_ppi_uuid =
+ UUID_LE(0x3DDDFAA6, 0x361B, 0x4EB4,
+ 0xA4, 0x24, 0x8D, 0x10, 0x08, 0x9D, 0x16, 0x53);

static inline union acpi_object *
tpm_eval_dsm(acpi_handle ppi_handle, int func, acpi_object_type type,
union acpi_object *argv4)
{
BUG_ON(!ppi_handle);
- return acpi_evaluate_dsm_typed(ppi_handle, tpm_ppi_uuid,
+ return acpi_evaluate_dsm_typed(ppi_handle, &tpm_ppi_uuid,
TPM_PPI_REVISION_ID,
func, argv4, type);
}
@@ -107,7 +103,7 @@ static ssize_t tpm_store_ppi_request(struct device *dev,
* is updated with function index from SUBREQ to SUBREQ2 since PPI
* version 1.1
*/
- if (acpi_check_dsm(chip->acpi_dev_handle, tpm_ppi_uuid,
+ if (acpi_check_dsm(chip->acpi_dev_handle, &tpm_ppi_uuid,
TPM_PPI_REVISION_ID, 1 << TPM_PPI_FN_SUBREQ2))
func = TPM_PPI_FN_SUBREQ2;

@@ -268,7 +264,7 @@ static ssize_t show_ppi_operations(acpi_handle dev_handle, char *buf, u32 start,
"User not required",
};

- if (!acpi_check_dsm(dev_handle, tpm_ppi_uuid, TPM_PPI_REVISION_ID,
+ if (!acpi_check_dsm(dev_handle, &tpm_ppi_uuid, TPM_PPI_REVISION_ID,
1 << TPM_PPI_FN_GETOPR))
return -EPERM;

@@ -341,12 +337,12 @@ void tpm_add_ppi(struct tpm_chip *chip)
if (!chip->acpi_dev_handle)
return;

- if (!acpi_check_dsm(chip->acpi_dev_handle, tpm_ppi_uuid,
+ if (!acpi_check_dsm(chip->acpi_dev_handle, &tpm_ppi_uuid,
TPM_PPI_REVISION_ID, 1 << TPM_PPI_FN_VERSION))
return;

/* Cache PPI version string. */
- obj = acpi_evaluate_dsm_typed(chip->acpi_dev_handle, tpm_ppi_uuid,
+ obj = acpi_evaluate_dsm_typed(chip->acpi_dev_handle, &tpm_ppi_uuid,
TPM_PPI_REVISION_ID, TPM_PPI_FN_VERSION,
NULL, ACPI_TYPE_STRING);
if (obj) {
diff --git a/drivers/gpu/drm/i915/intel_acpi.c b/drivers/gpu/drm/i915/intel_acpi.c
index eb638a1..72bfe6c 100644
--- a/drivers/gpu/drm/i915/intel_acpi.c
+++ b/drivers/gpu/drm/i915/intel_acpi.c
@@ -15,13 +15,9 @@ static struct intel_dsm_priv {
acpi_handle dhandle;
} intel_dsm_priv;

-static const u8 intel_dsm_guid[] = {
- 0xd3, 0x73, 0xd8, 0x7e,
- 0xd0, 0xc2,
- 0x4f, 0x4e,
- 0xa8, 0x54,
- 0x0f, 0x13, 0x17, 0xb0, 0x1c, 0x2c
-};
+static const uuid_le intel_dsm_guid =
+ UUID_LE(0x7ed873d3, 0xc2d0, 0x4e4f,
+ 0xa8, 0x54, 0x0f, 0x13, 0x17, 0xb0, 0x1c, 0x2c);

static char *intel_dsm_port_name(u8 id)
{
@@ -80,7 +76,7 @@ static void intel_dsm_platform_mux_info(void)
int i;
union acpi_object *pkg, *connector_count;

- pkg = acpi_evaluate_dsm_typed(intel_dsm_priv.dhandle, intel_dsm_guid,
+ pkg = acpi_evaluate_dsm_typed(intel_dsm_priv.dhandle, &intel_dsm_guid,
INTEL_DSM_REVISION_ID, INTEL_DSM_FN_PLATFORM_MUX_INFO,
NULL, ACPI_TYPE_PACKAGE);
if (!pkg) {
@@ -118,7 +114,7 @@ static bool intel_dsm_pci_probe(struct pci_dev *pdev)
if (!dhandle)
return false;

- if (!acpi_check_dsm(dhandle, intel_dsm_guid, INTEL_DSM_REVISION_ID,
+ if (!acpi_check_dsm(dhandle, &intel_dsm_guid, INTEL_DSM_REVISION_ID,
1 << INTEL_DSM_FN_PLATFORM_MUX_INFO)) {
DRM_DEBUG_KMS("no _DSM method for intel device\n");
return false;
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c
index cdf5227..52ee9a3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -61,15 +61,13 @@ bool nouveau_is_v1_dsm(void) {
#define NOUVEAU_DSM_HAS_OPT 0x2

#ifdef CONFIG_VGA_SWITCHEROO
-static const char nouveau_dsm_muid[] = {
- 0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D,
- 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4,
-};
+static const uuid_le nouveau_dsm_muid =
+ UUID_LE(0x9D95A0A0, 0x0060, 0x4D48,
+ 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4);

-static const char nouveau_op_dsm_muid[] = {
- 0xF8, 0xD8, 0x86, 0xA4, 0xDA, 0x0B, 0x1B, 0x47,
- 0xA7, 0x2B, 0x60, 0x42, 0xA6, 0xB5, 0xBE, 0xE0,
-};
+static const uuid_le nouveau_op_dsm_muid =
+ UUID_LE(0xA486D8F8, 0x0BDA, 0x471B,
+ 0xA7, 0x2B, 0x60, 0x42, 0xA6, 0xB5, 0xBE, 0xE0);

static int nouveau_optimus_dsm(acpi_handle handle, int func, int arg, uint32_t *result)
{
@@ -87,7 +85,7 @@ static int nouveau_optimus_dsm(acpi_handle handle, int func, int arg, uint32_t *
args_buff[i] = (arg >> i * 8) & 0xFF;

*result = 0;
- obj = acpi_evaluate_dsm_typed(handle, nouveau_op_dsm_muid, 0x00000100,
+ obj = acpi_evaluate_dsm_typed(handle, &nouveau_op_dsm_muid, 0x00000100,
func, &argv4, ACPI_TYPE_BUFFER);
if (!obj) {
acpi_handle_info(handle, "failed to evaluate _DSM\n");
@@ -137,7 +135,7 @@ static int nouveau_dsm(acpi_handle handle, int func, int arg)
.integer.value = arg,
};

- obj = acpi_evaluate_dsm_typed(handle, nouveau_dsm_muid, 0x00000102,
+ obj = acpi_evaluate_dsm_typed(handle, &nouveau_dsm_muid, 0x00000102,
func, &argv4, ACPI_TYPE_INTEGER);
if (!obj) {
acpi_handle_info(handle, "failed to evaluate _DSM\n");
@@ -224,7 +222,7 @@ static int nouveau_dsm_pci_probe(struct pci_dev *pdev)
if (!acpi_has_method(dhandle, "_DSM"))
return false;

- if (acpi_check_dsm(dhandle, nouveau_dsm_muid, 0x00000102,
+ if (acpi_check_dsm(dhandle, &nouveau_dsm_muid, 0x00000102,
1 << NOUVEAU_DSM_POWER))
retval |= NOUVEAU_DSM_HAS_MUX;

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c
index 9700a76..5fe45e9 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c
@@ -81,10 +81,9 @@ mxm_shadow_dsm(struct nvkm_mxm *mxm, u8 version)
{
struct nvkm_subdev *subdev = &mxm->subdev;
struct nvkm_device *device = subdev->device;
- static char muid[] = {
- 0x00, 0xA4, 0x04, 0x40, 0x7D, 0x91, 0xF2, 0x4C,
- 0xB8, 0x9C, 0x79, 0xB6, 0x2F, 0xD5, 0x56, 0x65
- };
+ static uuid_le muid =
+ UUID_LE(0x4004A400, 0x917D, 0x4CF2,
+ 0xB8, 0x9C, 0x79, 0xB6, 0x2F, 0xD5, 0x56, 0x65);
u32 mxms_args[] = { 0x00000000 };
union acpi_object argv4 = {
.buffer.type = ACPI_TYPE_BUFFER,
@@ -105,7 +104,7 @@ mxm_shadow_dsm(struct nvkm_mxm *mxm, u8 version)
* unless you pass in exactly the version it supports..
*/
rev = (version & 0xf0) << 4 | (version & 0x0f);
- obj = acpi_evaluate_dsm(handle, muid, rev, 0x00000010, &argv4);
+ obj = acpi_evaluate_dsm(handle, &muid, rev, 0x00000010, &argv4);
if (!obj) {
nvkm_debug(subdev, "DSM MXMS failed\n");
return false;
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index b921693..291bacf 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -871,10 +871,9 @@ static const struct acpi_gpio_mapping i2c_hid_acpi_gpios[] = {
static int i2c_hid_acpi_pdata(struct i2c_client *client,
struct i2c_hid_platform_data *pdata)
{
- static u8 i2c_hid_guid[] = {
- 0xF7, 0xF6, 0xDF, 0x3C, 0x67, 0x42, 0x55, 0x45,
- 0xAD, 0x05, 0xB3, 0x0A, 0x3D, 0x89, 0x38, 0xDE,
- };
+ static uuid_le i2c_hid_guid =
+ UUID_LE(0x3CDFF6F7, 0x4267, 0x4555,
+ 0xAD, 0x05, 0xB3, 0x0A, 0x3D, 0x89, 0x38, 0xDE);
union acpi_object *obj;
struct acpi_device *adev;
acpi_handle handle;
@@ -884,7 +883,7 @@ static int i2c_hid_acpi_pdata(struct i2c_client *client,
if (!handle || acpi_bus_get_device(handle, &adev))
return -ENODEV;

- obj = acpi_evaluate_dsm_typed(handle, i2c_hid_guid, 1, 1, NULL,
+ obj = acpi_evaluate_dsm_typed(handle, &i2c_hid_guid, 1, 1, NULL,
ACPI_TYPE_INTEGER);
if (!obj) {
dev_err(&client->dev, "device _DSM execution failed\n");
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index fb092f3..1b4509e 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1783,10 +1783,9 @@ IOMMU_INIT_POST(detect_intel_iommu);
* for Directed-IO Architecture Specifiction, Rev 2.2, Section 8.8
* "Remapping Hardware Unit Hot Plug".
*/
-static u8 dmar_hp_uuid[] = {
- /* 0000 */ 0xA6, 0xA3, 0xC1, 0xD8, 0x9B, 0xBE, 0x9B, 0x4C,
- /* 0008 */ 0x91, 0xBF, 0xC3, 0xCB, 0x81, 0xFC, 0x5D, 0xAF
-};
+static uuid_le dmar_hp_uuid =
+ UUID_LE(0xD8C1A3A6, 0xBE9B, 0x4C9B,
+ 0x91, 0xBF, 0xC3, 0xCB, 0x81, 0xFC, 0x5D, 0xAF);

/*
* Currently there's only one revision and BIOS will not check the revision id,
@@ -1799,7 +1798,7 @@ static u8 dmar_hp_uuid[] = {

static inline bool dmar_detect_dsm(acpi_handle handle, int func)
{
- return acpi_check_dsm(handle, dmar_hp_uuid, DMAR_DSM_REV_ID, 1 << func);
+ return acpi_check_dsm(handle, &dmar_hp_uuid, DMAR_DSM_REV_ID, 1 << func);
}

static int dmar_walk_dsm_resource(acpi_handle handle, int func,
@@ -1818,7 +1817,7 @@ static int dmar_walk_dsm_resource(acpi_handle handle, int func,
if (!dmar_detect_dsm(handle, func))
return 0;

- obj = acpi_evaluate_dsm_typed(handle, dmar_hp_uuid, DMAR_DSM_REV_ID,
+ obj = acpi_evaluate_dsm_typed(handle, &dmar_hp_uuid, DMAR_DSM_REV_ID,
func, NULL, ACPI_TYPE_BUFFER);
if (!obj)
return -ENODEV;
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 9a033e8..c129da3 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -24,10 +24,9 @@
* The UUID is defined in the PCI Firmware Specification available here:
* https://www.pcisig.com/members/downloads/pcifw_r3_1_13Dec10.pdf
*/
-const u8 pci_acpi_dsm_uuid[] = {
- 0xd0, 0x37, 0xc9, 0xe5, 0x53, 0x35, 0x7a, 0x4d,
- 0x91, 0x17, 0xea, 0x4d, 0x19, 0xc3, 0x43, 0x4d
-};
+const uuid_le pci_acpi_dsm_uuid =
+ UUID_LE(0xe5c937d0, 0x3553, 0x4d7a,
+ 0x91, 0x17, 0xea, 0x4d, 0x19, 0xc3, 0x43, 0x4d);

phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle)
{
@@ -558,7 +557,7 @@ void acpi_pci_add_bus(struct pci_bus *bus)
if (!pci_is_root_bus(bus))
return;

- obj = acpi_evaluate_dsm(ACPI_HANDLE(bus->bridge), pci_acpi_dsm_uuid, 3,
+ obj = acpi_evaluate_dsm(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_uuid, 3,
RESET_DELAY_DSM, NULL);
if (!obj)
return;
@@ -623,7 +622,7 @@ static void pci_acpi_optimize_delay(struct pci_dev *pdev,
if (bridge->ignore_reset_delay)
pdev->d3cold_delay = 0;

- obj = acpi_evaluate_dsm(handle, pci_acpi_dsm_uuid, 3,
+ obj = acpi_evaluate_dsm(handle, &pci_acpi_dsm_uuid, 3,
FUNCTION_DELAY_DSM, NULL);
if (!obj)
return;
diff --git a/drivers/pci/pci-label.c b/drivers/pci/pci-label.c
index 0ae74d9..05d94d7 100644
--- a/drivers/pci/pci-label.c
+++ b/drivers/pci/pci-label.c
@@ -172,7 +172,7 @@ static int dsm_get_label(struct device *dev, char *buf,
if (!handle)
return -1;

- obj = acpi_evaluate_dsm(handle, pci_acpi_dsm_uuid, 0x2,
+ obj = acpi_evaluate_dsm(handle, &pci_acpi_dsm_uuid, 0x2,
DEVICE_LABEL_DSM, NULL);
if (!obj)
return -1;
@@ -212,7 +212,7 @@ static bool device_has_dsm(struct device *dev)
if (!handle)
return false;

- return !!acpi_check_dsm(handle, pci_acpi_dsm_uuid, 0x2,
+ return !!acpi_check_dsm(handle, &pci_acpi_dsm_uuid, 0x2,
1 << DEVICE_LABEL_DSM);
}

diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c b/drivers/thermal/int340x_thermal/int3400_thermal.c
index 5836e55..47f54bc 100644
--- a/drivers/thermal/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3400_thermal.c
@@ -141,10 +141,10 @@ static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
}

for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
- u8 uuid[16];
+ uuid_le u;

- acpi_str_to_uuid(int3400_thermal_uuids[j], uuid);
- if (!strncmp(uuid, objb->buffer.pointer, 16)) {
+ uuid_le_to_bin(int3400_thermal_uuids[j], &u);
+ if (!uuid_le_cmp(u, *(uuid_le *)objb->buffer.pointer)) {
priv->uuid_bitmap |= (1 << j);
break;
}
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index f0640b7..4290e94 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -191,13 +191,12 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
#ifdef CONFIG_ACPI
static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
{
- static const u8 intel_dsm_uuid[] = {
- 0xb7, 0x0c, 0x34, 0xac, 0x01, 0xe9, 0xbf, 0x45,
- 0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23,
- };
+ static const uuid_le intel_dsm_uuid =
+ UUID_LE(0xac340cb7, 0xe901, 0x45bf,
+ 0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23);
union acpi_object *obj;

- obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), intel_dsm_uuid, 3, 1,
+ obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), &intel_dsm_uuid, 3, 1,
NULL);
ACPI_FREE(obj);
}
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 14362a8..b4b6fa2 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -61,13 +61,15 @@ bool acpi_ata_match(acpi_handle handle);
bool acpi_bay_match(acpi_handle handle);
bool acpi_dock_match(acpi_handle handle);

-bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs);
-union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid,
+bool acpi_check_dsm(acpi_handle handle, const uuid_le *uuid, int rev,
+ u64 funcs);
+union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const uuid_le *uuid,
int rev, int func, union acpi_object *argv4);

static inline union acpi_object *
-acpi_evaluate_dsm_typed(acpi_handle handle, const u8 *uuid, int rev, int func,
- union acpi_object *argv4, acpi_object_type type)
+acpi_evaluate_dsm_typed(acpi_handle handle, const uuid_le *uuid, int rev,
+ int func, union acpi_object *argv4,
+ acpi_object_type type)
{
union acpi_object *obj;

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 06ed7e5..7d1939d 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -39,6 +39,7 @@
#include <linux/dynamic_debug.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/uuid.h>

#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
@@ -430,7 +431,6 @@ struct acpi_osc_context {
struct acpi_buffer ret; /* free by caller if success */
};

-acpi_status acpi_str_to_uuid(char *str, u8 *uuid);
acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);

/* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h
index 89ab057..861a779 100644
--- a/include/linux/pci-acpi.h
+++ b/include/linux/pci-acpi.h
@@ -101,7 +101,7 @@ static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
#endif

-extern const u8 pci_acpi_dsm_uuid[];
+extern const uuid_le pci_acpi_dsm_uuid;
#define DEVICE_LABEL_DSM 0x07
#define RESET_DELAY_DSM 0x08
#define FUNCTION_DELAY_DSM 0x09
diff --git a/sound/soc/intel/skylake/skl-nhlt.c b/sound/soc/intel/skylake/skl-nhlt.c
index 6e4b21c..ac1b641 100644
--- a/sound/soc/intel/skylake/skl-nhlt.c
+++ b/sound/soc/intel/skylake/skl-nhlt.c
@@ -20,8 +20,9 @@
#include "skl.h"

/* Unique identification for getting NHLT blobs */
-static u8 OSC_UUID[16] = {0x6E, 0x88, 0x9F, 0xA6, 0xEB, 0x6C, 0x94, 0x45,
- 0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53};
+static uuid_le osc_uuid =
+ UUID_LE(0xA69F886E, 0x6CEB, 0x4594,
+ 0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53);

#define DSDT_NHLT_PATH "\\_SB.PCI0.HDAS"

@@ -36,7 +37,7 @@ void *skl_nhlt_init(struct device *dev)
return NULL;
}

- obj = acpi_evaluate_dsm(handle, OSC_UUID, 1, 1, NULL);
+ obj = acpi_evaluate_dsm(handle, &osc_uuid, 1, 1, NULL);
if (obj && obj->type == ACPI_TYPE_BUFFER) {
nhlt_ptr = (struct nhlt_resource_desc *)obj->buffer.pointer;

--
2.7.0