drm/msm: msm_fence.h: fix all kernel-doc warnings

Correct or add kernel-doc comments to eliminate all warnings:

Warning: drivers/gpu/drm/msm/msm_fence.h:27 Incorrect use of kernel-doc
 format: * last_fence:
Warning: drivers/gpu/drm/msm/msm_fence.h:36 Incorrect use of kernel-doc
 format: * completed_fence:
Warning: drivers/gpu/drm/msm/msm_fence.h:44 Incorrect use of kernel-doc
 format: * fenceptr:
Warning: drivers/gpu/drm/msm/msm_fence.h:65 Incorrect use of kernel-doc
 format: * next_deadline_fence:
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'dev' not
 described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'name' not
 described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'context' not
 described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'index' not
 described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'fence' not
 described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'there is no
 remaining pending work */ uint32_t last_fence' not described in
 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'updated from the CPU after interrupt * from GPU */ uint32_t completed_fence' not described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'fenceptr' not
 described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'spinlock' not
 described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'next_deadline'
 not described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member
 'next_deadline_fence' not described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'deadline_timer'
 not described in 'msm_fence_context'
Warning: drivers/gpu/drm/msm/msm_fence.h:74 struct member 'deadline_work'
 not described in 'msm_fence_context'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/695667/
Link: https://lore.kernel.org/r/20251219184638.1813181-17-rdunlap@infradead.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

Author: rddunlap

drivers/gpu/drm/msm/msm_fence.h

@@ -16,41 +16,39 @@
  * incrementing fence seqno at the end of each submit
  */
 struct msm_fence_context {
+	/** @dev: the drm device */
 	struct drm_device *dev;
-	/** name: human readable name for fence timeline */
+	/** @name: human readable name for fence timeline */
 	char name[32];
-	/** context: see dma_fence_context_alloc() */
+	/** @context: see dma_fence_context_alloc() */
 	unsigned context;
-	/** index: similar to context, but local to msm_fence_context's */
+	/** @index: similar to context, but local to msm_fence_context's */
 	unsigned index;
-
 	/**
-	 * last_fence:
-	 *
+	 * @last_fence:
 	 * Last assigned fence, incremented each time a fence is created
 	 * on this fence context.  If last_fence == completed_fence,
 	 * there is no remaining pending work
 	 */
 	uint32_t last_fence;
-
 	/**
-	 * completed_fence:
-	 *
+	 * @completed_fence:
 	 * The last completed fence, updated from the CPU after interrupt
 	 * from GPU
 	 */
 	uint32_t completed_fence;
-
 	/**
-	 * fenceptr:
-	 *
+	 * @fenceptr:
 	 * The address that the GPU directly writes with completed fence
 	 * seqno.  This can be ahead of completed_fence.  We can peek at
 	 * this to see if a fence has already signaled but the CPU hasn't
 	 * gotten around to handling the irq and updating completed_fence
 	 */
 	volatile uint32_t *fenceptr;
 
+	/**
+	 * @spinlock: fence context spinlock
+	 */
 	spinlock_t spinlock;
 
 	/*
@@ -59,18 +57,22 @@ struct msm_fence_context {
 	 * don't queue, so maybe that is ok
 	 */
 
-	/** next_deadline: Time of next deadline */
+	/** @next_deadline: Time of next deadline */
 	ktime_t next_deadline;
-
 	/**
-	 * next_deadline_fence:
-	 *
+	 * @next_deadline_fence:
 	 * Fence value for next pending deadline.  The deadline timer is
 	 * canceled when this fence is signaled.
 	 */
 	uint32_t next_deadline_fence;
-
+	/**
+	 * @deadline_timer: tracks nearest deadline of a fence timeline and
+	 * expires just before it.
+	 */
 	struct hrtimer deadline_timer;
+	/**
+	 * @deadline_work: work to do after deadline_timer expires
+	 */
 	struct kthread_work deadline_work;
 };