ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()
acpi_evaluate_dsm() and friends take a pointer to a raw buffer of 16
bytes. Instead we convert them to use guid_t type. At the same time we
convert current users.
acpi_str_to_uuid() becomes useless after the conversion and it's safe to
get rid of it.
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Cc: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Yisen Zhuang <yisen.zhuang@huawei.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 27d0dcf..b9d956c 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -613,19 +613,19 @@ acpi_status acpi_evaluate_lck(acpi_handle handle, int lock)
/**
* acpi_evaluate_dsm - evaluate device's _DSM method
* @handle: ACPI device handle
- * @uuid: UUID of requested functions, should be 16 bytes
+ * @guid: GUID of requested functions, should be 16 bytes
* @rev: revision number of requested function
* @func: requested function number
* @argv4: the function specific parameter
*
- * Evaluate device's _DSM method with specified UUID, revision id and
+ * Evaluate device's _DSM method with specified GUID, revision id and
* function number. Caller needs to free the returned object.
*
* Though ACPI defines the fourth parameter for _DSM should be a package,
* some old BIOSes do expect a buffer or an integer etc.
*/
union acpi_object *
-acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 func,
+acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 func,
union acpi_object *argv4)
{
acpi_status ret;
@@ -638,7 +638,7 @@ acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 func,
params[0].type = ACPI_TYPE_BUFFER;
params[0].buffer.length = 16;
- params[0].buffer.pointer = (char *)uuid;
+ params[0].buffer.pointer = (u8 *)guid;
params[1].type = ACPI_TYPE_INTEGER;
params[1].integer.value = rev;
params[2].type = ACPI_TYPE_INTEGER;
@@ -666,7 +666,7 @@ EXPORT_SYMBOL(acpi_evaluate_dsm);
/**
* acpi_check_dsm - check if _DSM method supports requested functions.
* @handle: ACPI device handle
- * @uuid: UUID of requested functions, should be 16 bytes at least
+ * @guid: GUID of requested functions, should be 16 bytes at least
* @rev: revision number of requested functions
* @funcs: bitmap of requested functions
*
@@ -674,7 +674,7 @@ 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, u64 rev, u64 funcs)
+bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs)
{
int i;
u64 mask = 0;
@@ -683,7 +683,7 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 funcs)
if (funcs == 0)
return false;
- obj = acpi_evaluate_dsm(handle, uuid, rev, 0, NULL);
+ obj = acpi_evaluate_dsm(handle, guid, rev, 0, NULL);
if (!obj)
return false;
@@ -697,7 +697,7 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 funcs)
/*
* Bit 0 indicates whether there's support for any functions other than
- * function 0 for the specified UUID and revision.
+ * function 0 for the specified GUID and revision.
*/
if ((mask & 0x1) && (mask & funcs) == funcs)
return true;
