[PATCH -next] ACPI: fix doc warnings

[ChenXiaoSong]

Fix gcc W=1 warnings:
drivers/acpi/cppc_acpi.c:1356: warning: Function parameter or member 'cpu_num' not described in 'cppc_get_transition_latency'
drivers/acpi/cppc_acpi.c:573: warning: Function parameter or member 'pcc_ss_id' not described in 'pcc_data_alloc'
drivers/acpi/dock.c:388: warning: Function parameter or member 'ds' not described in 'handle_eject_request'
drivers/acpi/dock.c:388: warning: Function parameter or member 'event' not described in 'handle_eject_request'
drivers/acpi/sleep.c:496: warning: Function parameter or member 'acpi_state' not described in 'acpi_pm_start'
drivers/acpi/sleep.c:536: warning: Function parameter or member 'pm_state' not described in 'acpi_suspend_begin'
drivers/acpi/sleep.c:663: warning: Function parameter or member 'pm_state' not described in 'acpi_suspend_begin_old'
drivers/acpi/sleep.c:956: warning: Function parameter or member 'stage' not described in 'acpi_hibernation_begin_old'

Signed-off-by: ChenXiaoSong <chenxiaosong2@xxxxxxxxxx>
---
 drivers/acpi/cppc_acpi.c | 2 ++
 drivers/acpi/dock.c      | 2 ++
 drivers/acpi/sleep.c     | 4 ++++
 3 files changed, 8 insertions(+)

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index a4d4eebba1da..611938f2c132 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -561,6 +561,7 @@ bool __weak cpc_ffh_supported(void)
 
 /**
  * pcc_data_alloc() - Allocate the pcc_data memory for pcc subspace
+ * @pcc_ss_id: pcc subspace id.
  *
  * Check and allocate the cppc_pcc_data memory.
  * In some processor configurations it is possible that same subspace
@@ -1346,6 +1347,7 @@ EXPORT_SYMBOL_GPL(cppc_set_perf);
 
 /**
  * cppc_get_transition_latency - returns frequency transition latency in ns
+ * @cpu: CPU for which to get transition latency.
  *
  * ACPI CPPC does not explicitly specify how a platform can specify the
  * transition latency for performance change requests. The closest we have
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 7cf92158008f..6c0fb5c9b938 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -380,6 +380,8 @@ static int dock_in_progress(struct dock_station *ds)
 
 /**
  * handle_eject_request - handle an undock request checking for error conditions
+ * @ds: the dock station.
+ * @event: Event code.
  *
  * Check to make sure the dock device is still present, then undock and
  * hotremove all the devices that may need removing.
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index aaea10d39201..95521a8b49fc 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -491,6 +491,7 @@ static void acpi_pm_finish(void)
 
 /**
  * acpi_pm_start - Start system PM transition.
+ * @acpi_state: Power state value.
  */
 static void acpi_pm_start(u32 acpi_state)
 {
@@ -531,6 +532,7 @@ static u32 acpi_suspend_states[] = {
 /**
  *	acpi_suspend_begin - Set the target system sleep state to the state
  *		associated with given @pm_state, if supported.
+ *	@pm_state: pm suspend state.
  */
 static int acpi_suspend_begin(suspend_state_t pm_state)
 {
@@ -658,6 +660,7 @@ static const struct platform_suspend_ops acpi_suspend_ops = {
  *		state associated with given @pm_state, if supported, and
  *		execute the _PTS control method.  This function is used if the
  *		pre-ACPI 2.0 suspend ordering has been requested.
+ *	@pm_state: pm suspend state.
  */
 static int acpi_suspend_begin_old(suspend_state_t pm_state)
 {
@@ -951,6 +954,7 @@ static const struct platform_hibernation_ops acpi_hibernation_ops = {
  *		ACPI_STATE_S4 and execute the _PTS control method.  This
  *		function is used if the pre-ACPI 2.0 suspend ordering has been
  *		requested.
+ *	@stage: pm event massage
  */
 static int acpi_hibernation_begin_old(pm_message_t stage)
 {
-- 
2.25.4