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virt: vbox: core: fix all kernel-doc warnings

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Use kernel-doc format for functions that have comments that begin
with "/**".
This prevents 26 kernel-doc warnings.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20231222052521.14333-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Randy Dunlap 2023-12-21 21:25:19 -08:00 committed by Greg Kroah-Hartman
parent 7037f7141c
commit 8974a86d1e
1 changed files with 92 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

156
drivers/virt/vboxguest/vboxguest_core.c
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@ -33,16 +33,15 @@
VMMDEV_REQUESTOR_CON_DONT_KNOW | VMMDEV_REQUESTOR_TRUST_NOT_GIVEN)
/**
* Reserves memory in which the VMM can relocate any guest mappings
* that are floating around.
* vbg_guest_mappings_init - Reserves memory in which the VMM can
* relocate any guest mappings that are floating around.
* @gdev: The Guest extension device.
*
* This operation is a little bit tricky since the VMM might not accept
* just any address because of address clashes between the three contexts
* it operates in, so we try several times.
*
* Failure to reserve the guest mappings is ignored.
*
* @gdev: The Guest extension device.
*/
static void vbg_guest_mappings_init(struct vbg_dev *gdev)
{
@ -125,7 +124,7 @@ out:
}
/**
* Undo what vbg_guest_mappings_init did.
* vbg_guest_mappings_exit - Undo what vbg_guest_mappings_init did.
*
* @gdev: The Guest extension device.
*/
@ -166,9 +165,10 @@ static void vbg_guest_mappings_exit(struct vbg_dev *gdev)
}
/**
* Report the guest information to the host.
* Return: 0 or negative errno value.
* vbg_report_guest_info - Report the guest information to the host.
* @gdev: The Guest extension device.
*
* Return: %0 or negative errno value.
*/
static int vbg_report_guest_info(struct vbg_dev *gdev)
{
@ -229,10 +229,11 @@ out_free:
}
/**
* Report the guest driver status to the host.
* Return: 0 or negative errno value.
* vbg_report_driver_status - Report the guest driver status to the host.
* @gdev: The Guest extension device.
* @active: Flag whether the driver is now active or not.
*
* Return: 0 or negative errno value.
*/
static int vbg_report_driver_status(struct vbg_dev *gdev, bool active)
{
@ -261,10 +262,12 @@ static int vbg_report_driver_status(struct vbg_dev *gdev, bool active)
}
/**
* Inflate the balloon by one chunk. The caller owns the balloon mutex.
* Return: 0 or negative errno value.
* vbg_balloon_inflate - Inflate the balloon by one chunk. The caller
* owns the balloon mutex.
* @gdev: The Guest extension device.
* @chunk_idx: Index of the chunk.
*
* Return: %0 or negative errno value.
*/
static int vbg_balloon_inflate(struct vbg_dev *gdev, u32 chunk_idx)
{
@ -312,10 +315,12 @@ out_error:
}
/**
* Deflate the balloon by one chunk. The caller owns the balloon mutex.
* Return: 0 or negative errno value.
* vbg_balloon_deflate - Deflate the balloon by one chunk. The caller
* owns the balloon mutex.
* @gdev: The Guest extension device.
* @chunk_idx: Index of the chunk.
*
* Return: %0 or negative errno value.
*/
static int vbg_balloon_deflate(struct vbg_dev *gdev, u32 chunk_idx)
{
@ -344,7 +349,7 @@ static int vbg_balloon_deflate(struct vbg_dev *gdev, u32 chunk_idx)
return 0;
}
/**
/*
* Respond to VMMDEV_EVENT_BALLOON_CHANGE_REQUEST events, query the size
* the host wants the balloon to be and adjust accordingly.
*/
@ -409,7 +414,7 @@ static void vbg_balloon_work(struct work_struct *work)
}
}
/**
/*
* Callback for heartbeat timer.
*/
static void vbg_heartbeat_timer(struct timer_list *t)
@ -422,11 +427,12 @@ static void vbg_heartbeat_timer(struct timer_list *t)
}
/**
* Configure the host to check guest's heartbeat
* and get heartbeat interval from the host.
* Return: 0 or negative errno value.
* vbg_heartbeat_host_config - Configure the host to check guest's heartbeat
* and get heartbeat interval from the host.
* @gdev: The Guest extension device.
* @enabled: Set true to enable guest heartbeat checks on host.
*
* Return: %0 or negative errno value.
*/
static int vbg_heartbeat_host_config(struct vbg_dev *gdev, bool enabled)
{
@ -449,9 +455,11 @@ static int vbg_heartbeat_host_config(struct vbg_dev *gdev, bool enabled)
}
/**
* Initializes the heartbeat timer. This feature may be disabled by the host.
* Return: 0 or negative errno value.
* vbg_heartbeat_init - Initializes the heartbeat timer. This feature
* may be disabled by the host.
* @gdev: The Guest extension device.
*
* Return: %0 or negative errno value.
*/
static int vbg_heartbeat_init(struct vbg_dev *gdev)
{
@ -481,7 +489,8 @@ static int vbg_heartbeat_init(struct vbg_dev *gdev)
}
/**
* Cleanup hearbeat code, stop HB timer and disable host heartbeat checking.
* vbg_heartbeat_exit - Cleanup heartbeat code, stop HB timer and disable
* host heartbeat checking.
* @gdev: The Guest extension device.
*/
static void vbg_heartbeat_exit(struct vbg_dev *gdev)
@ -493,11 +502,12 @@ static void vbg_heartbeat_exit(struct vbg_dev *gdev)
}
/**
* Applies a change to the bit usage tracker.
* Return: true if the mask changed, false if not.
* vbg_track_bit_usage - Applies a change to the bit usage tracker.
* @tracker: The bit usage tracker.
* @changed: The bits to change.
* @previous: The previous value of the bits.
*
* Return: %true if the mask changed, %false if not.
*/
static bool vbg_track_bit_usage(struct vbg_bit_usage_tracker *tracker,
u32 changed, u32 previous)
@ -529,10 +539,12 @@ static bool vbg_track_bit_usage(struct vbg_bit_usage_tracker *tracker,
}
/**
* Init and termination worker for resetting the (host) event filter on the host
* Return: 0 or negative errno value.
* vbg_reset_host_event_filter - Init and termination worker for
* resetting the (host) event filter on the host
* @gdev: The Guest extension device.
* @fixed_events: Fixed events (init time).
*
* Return: %0 or negative errno value.
*/
static int vbg_reset_host_event_filter(struct vbg_dev *gdev,
u32 fixed_events)
@ -556,12 +568,8 @@ static int vbg_reset_host_event_filter(struct vbg_dev *gdev,
}
/**
* Changes the event filter mask for the given session.
*
* This is called in response to VBG_IOCTL_CHANGE_FILTER_MASK as well as to
* do session cleanup. Takes the session mutex.
*
* Return: 0 or negative errno value.
* vbg_set_session_event_filter - Changes the event filter mask for the
* given session.
* @gdev: The Guest extension device.
* @session: The session.
* @or_mask: The events to add.
@ -570,6 +578,11 @@ static int vbg_reset_host_event_filter(struct vbg_dev *gdev,
* This tweaks the error handling so we perform
* proper session cleanup even if the host
* misbehaves.
*
* This is called in response to VBG_IOCTL_CHANGE_FILTER_MASK as well as to
* do session cleanup. Takes the session mutex.
*
* Return: 0 or negative errno value.
*/
static int vbg_set_session_event_filter(struct vbg_dev *gdev,
struct vbg_session *session,
@ -637,9 +650,11 @@ out:
}
/**
* Init and termination worker for set guest capabilities to zero on the host.
* Return: 0 or negative errno value.
* vbg_reset_host_capabilities - Init and termination worker for set
* guest capabilities to zero on the host.
* @gdev: The Guest extension device.
*
* Return: %0 or negative errno value.
*/
static int vbg_reset_host_capabilities(struct vbg_dev *gdev)
{
@ -662,12 +677,14 @@ static int vbg_reset_host_capabilities(struct vbg_dev *gdev)
}
/**
* Set guest capabilities on the host.
* Must be called with gdev->session_mutex hold.
* Return: 0 or negative errno value.
* vbg_set_host_capabilities - Set guest capabilities on the host.
* @gdev: The Guest extension device.
* @session: The session.
* @session_termination: Set if we're called by the session cleanup code.
*
* Must be called with gdev->session_mutex hold.
*
* Return: %0 or negative errno value.
*/
static int vbg_set_host_capabilities(struct vbg_dev *gdev,
struct vbg_session *session,
@ -704,9 +721,8 @@ static int vbg_set_host_capabilities(struct vbg_dev *gdev,
}
/**
* Acquire (get exclusive access) guest capabilities for a session.
* Takes the session mutex.
* Return: 0 or negative errno value.
* vbg_acquire_session_capabilities - Acquire (get exclusive access)
* guest capabilities for a session.
* @gdev: The Guest extension device.
* @session: The session.
* @flags: Flags (VBGL_IOC_AGC_FLAGS_XXX).
@ -716,6 +732,10 @@ static int vbg_set_host_capabilities(struct vbg_dev *gdev,
* This tweaks the error handling so we perform
* proper session cleanup even if the host
* misbehaves.
*
* Takes the session mutex.
*
* Return: %0 or negative errno value.
*/
static int vbg_acquire_session_capabilities(struct vbg_dev *gdev,
struct vbg_session *session,
@ -811,8 +831,8 @@ out:
}
/**
* Sets the guest capabilities for a session. Takes the session mutex.
* Return: 0 or negative errno value.
* vbg_set_session_capabilities - Sets the guest capabilities for a
* session. Takes the session mutex.
* @gdev: The Guest extension device.
* @session: The session.
* @or_mask: The capabilities to add.
@ -821,6 +841,8 @@ out:
* This tweaks the error handling so we perform
* proper session cleanup even if the host
* misbehaves.
*
* Return: %0 or negative errno value.
*/
static int vbg_set_session_capabilities(struct vbg_dev *gdev,
struct vbg_session *session,
@ -866,9 +888,10 @@ out:
}
/**
* vbg_query_host_version get the host feature mask and version information.
* Return: 0 or negative errno value.
* vbg_query_host_version - get the host feature mask and version information.
* @gdev: The Guest extension device.
*
* Return: %0 or negative errno value.
*/
static int vbg_query_host_version(struct vbg_dev *gdev)
{
@ -905,19 +928,18 @@ out:
}
/**
* Initializes the VBoxGuest device extension when the
* device driver is loaded.
* vbg_core_init - Initializes the VBoxGuest device extension when the
* device driver is loaded.
* @gdev: The Guest extension device.
* @fixed_events: Events that will be enabled upon init and no client
* will ever be allowed to mask.
*
* The native code locates the VMMDev on the PCI bus and retrieve
* the MMIO and I/O port ranges, this function will take care of
* mapping the MMIO memory (if present). Upon successful return
* the native code should set up the interrupt handler.
*
* Return: 0 or negative errno value.
*
* @gdev: The Guest extension device.
* @fixed_events: Events that will be enabled upon init and no client
* will ever be allowed to mask.
* Return: %0 or negative errno value.
*/
int vbg_core_init(struct vbg_dev *gdev, u32 fixed_events)
{
@ -1017,11 +1039,12 @@ err_free_reqs:
}
/**
* Call this on exit to clean-up vboxguest-core managed resources.
* vbg_core_exit - Call this on exit to clean-up vboxguest-core managed
* resources.
* @gdev: The Guest extension device.
*
* The native code should call this before the driver is loaded,
* but don't call this on shutdown.
* @gdev: The Guest extension device.
*/
void vbg_core_exit(struct vbg_dev *gdev)
{
@ -1046,12 +1069,13 @@ void vbg_core_exit(struct vbg_dev *gdev)
}
/**
* Creates a VBoxGuest user session.
*
* vboxguest_linux.c calls this when userspace opens the char-device.
* Return: A pointer to the new session or an ERR_PTR on error.
* vbg_core_open_session - Creates a VBoxGuest user session.
* @gdev: The Guest extension device.
* @requestor: VMMDEV_REQUESTOR_* flags
*
* vboxguest_linux.c calls this when userspace opens the char-device.
*
* Return: A pointer to the new session or an ERR_PTR on error.
*/
struct vbg_session *vbg_core_open_session(struct vbg_dev *gdev, u32 requestor)
{
@ -1068,7 +1092,7 @@ struct vbg_session *vbg_core_open_session(struct vbg_dev *gdev, u32 requestor)
}
/**
* Closes a VBoxGuest session.
* vbg_core_close_session - Closes a VBoxGuest session.
* @session: The session to close (and free).
*/
void vbg_core_close_session(struct vbg_session *session)
@ -1250,11 +1274,13 @@ static int vbg_ioctl_interrupt_all_wait_events(struct vbg_dev *gdev,
}
/**
* Checks if the VMM request is allowed in the context of the given session.
* Return: 0 or negative errno value.
* vbg_req_allowed - Checks if the VMM request is allowed in the
* context of the given session.
* @gdev: The Guest extension device.
* @session: The calling session.
* @req: The request.
*
* Return: %0 or negative errno value.
*/
static int vbg_req_allowed(struct vbg_dev *gdev, struct vbg_session *session,
const struct vmmdev_request_header *req)
@ -1670,11 +1696,12 @@ static int vbg_ioctl_write_core_dump(struct vbg_dev *gdev,
}
/**
* Common IOCtl for user to kernel communication.
* Return: 0 or negative errno value.
* vbg_core_ioctl - Common IOCtl for user to kernel communication.
* @session: The client session.
* @req: The requested function.
* @data: The i/o data buffer, minimum size sizeof(struct vbg_ioctl_hdr).
*
* Return: %0 or negative errno value.
*/
int vbg_core_ioctl(struct vbg_session *session, unsigned int req, void *data)
{
@ -1744,11 +1771,12 @@ int vbg_core_ioctl(struct vbg_session *session, unsigned int req, void *data)
}
/**
* Report guest supported mouse-features to the host.
* vbg_core_set_mouse_status - Report guest supported mouse-features to the host.
*
* Return: 0 or negative errno value.
* @gdev: The Guest extension device.
* @features: The set of features to report to the host.
*
* Return: %0 or negative errno value.
*/
int vbg_core_set_mouse_status(struct vbg_dev *gdev, u32 features)
{
@ -1772,7 +1800,7 @@ int vbg_core_set_mouse_status(struct vbg_dev *gdev, u32 features)
return vbg_status_code_to_errno(rc);
}
/** Core interrupt service routine. */
/* Core interrupt service routine. */
irqreturn_t vbg_core_isr(int irq, void *dev_id)
{
struct vbg_dev *gdev = dev_id;