On 2021-06-17 15:20, Dmitry Baryshkov wrote:
DPU interrupts code allows multiple callbacks per interrut. In reality
/interrupt
none of the interrupts is shared between blocks (and will probably never
be). Drop support for registering multiple callbacks per interrupt to
simplify interrupt handling code.

Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>

I need to check on why we had this design originally and we still do.
the idx with which we are registering today can generate only one hw interrupt. But i am not sure if something for planned for future use. Will update in a day or two.

meanwhile some comments and questions below.

---
 drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h  |  18 +--
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c   |   6 +-
 .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h  |   2 +-
 .../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c  |  10 +-
 .../drm/msm/disp/dpu1/dpu_encoder_phys_vid.c  |   6 +-
 .../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 144 +++++++-----------
 .../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h |  12 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h       |  12 --
 drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h     |  10 +-
 9 files changed, 86 insertions(+), 134 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
index 90ae6c9ccc95..44ab97fb2964 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
@@ -46,10 +46,8 @@ u32 dpu_core_irq_read(
  *                             interrupt
  * @dpu_kms:           DPU handle
  * @irq_idx:           irq index
- * @irq_cb:            IRQ callback structure, containing callback function
- *                     and argument. Passing NULL for irq_cb will unregister
- *                     the callback for the given irq_idx
- *                     This must exist until un-registration.
+ * @irq_cb:            IRQ callback funcion.
+ * @irq_arg:           IRQ callback argument.
  * @return:            0 for success registering callback, otherwise failure
  *
  * This function supports registration of multiple callbacks for each
interrupt.
@@ -57,17 +55,16 @@ u32 dpu_core_irq_read(
 int dpu_core_irq_register_callback(
                struct dpu_kms *dpu_kms,
                int irq_idx,
-               struct dpu_irq_callback *irq_cb);
+               void (*irq_cb)(void *arg, int irq_idx),
+               void *irq_arg);

 /**
  * dpu_core_irq_unregister_callback - For unregistering callback
function on IRQ
  *                             interrupt
  * @dpu_kms:           DPU handle
  * @irq_idx:           irq index
- * @irq_cb:            IRQ callback structure, containing callback function
- *                     and argument. Passing NULL for irq_cb will unregister
- *                     the callback for the given irq_idx
- *                     This must match with registration.
+ * @irq_cb:            IRQ callback funcion.
/function
this typo is there in multiple places
+ * @irq_arg:           IRQ callback argument.
  * @return:            0 for success registering callback, otherwise failure
  *
  * This function supports registration of multiple callbacks for each
interrupt.
@@ -75,7 +72,8 @@ int dpu_core_irq_register_callback(
 int dpu_core_irq_unregister_callback(
                struct dpu_kms *dpu_kms,
                int irq_idx,
-               struct dpu_irq_callback *irq_cb);
+               void (*irq_cb)(void *arg, int irq_idx),
+               void *irq_arg);

 /**
  * dpu_debugfs_core_irq_init - register core irq debugfs
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 1c04b7cce43e..d3557b0f4db9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -310,7 +310,7 @@ int dpu_encoder_helper_wait_for_irq(struct
dpu_encoder_phys *phys_enc,
                                      phys_enc->hw_pp->idx - PINGPONG_0,
                                      atomic_read(wait_info->atomic_cnt));
                        local_irq_save(flags);
-                       irq->cb.func(phys_enc, irq->irq_idx);
+                       irq->func(phys_enc, irq->irq_idx);
                        local_irq_restore(flags);
                        ret = 0;
                } else {
@@ -352,7 +352,7 @@ int dpu_encoder_helper_register_irq(struct
dpu_encoder_phys *phys_enc,
        }

        ret = dpu_core_irq_register_callback(phys_enc->dpu_kms, irq->irq_idx,
-                       &irq->cb);
+                       irq->func, phys_enc);
        if (ret) {
                DPU_ERROR_PHYS(phys_enc,
                        "failed to register IRQ callback for %s\n",
@@ -384,7 +384,7 @@ int dpu_encoder_helper_unregister_irq(struct
dpu_encoder_phys *phys_enc,
        }

ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms, irq->irq_idx,
-                       &irq->cb);
+                       irq->func, phys_enc);
        if (ret) {
                DRM_ERROR("unreg cb fail id=%u, intr=%d, irq=%d ret=%d",
                          DRMID(phys_enc->parent), intr_idx,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
index e7270eb6b84b..80d87871fd94 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
@@ -174,7 +174,7 @@ struct dpu_encoder_irq {
        const char *name;
        enum dpu_intr_idx intr_idx;
        int irq_idx;
-       struct dpu_irq_callback cb;
+       void (*func)(void *arg, int irq_idx);
 };

 /**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
index aa01698d6b25..f921a5c99456 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
@@ -782,30 +782,28 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(
        phys_enc->enable_state = DPU_ENC_DISABLED;
        for (i = 0; i < INTR_IDX_MAX; i++) {
                irq = &phys_enc->irq[i];
-               INIT_LIST_HEAD(&irq->cb.list);
                irq->irq_idx = -EINVAL;
-               irq->cb.arg = phys_enc;
        }

        irq = &phys_enc->irq[INTR_IDX_CTL_START];
        irq->name = "ctl_start";
        irq->intr_idx = INTR_IDX_CTL_START;
-       irq->cb.func = dpu_encoder_phys_cmd_ctl_start_irq;
+       irq->func = dpu_encoder_phys_cmd_ctl_start_irq;

        irq = &phys_enc->irq[INTR_IDX_PINGPONG];
        irq->name = "pp_done";
        irq->intr_idx = INTR_IDX_PINGPONG;
-       irq->cb.func = dpu_encoder_phys_cmd_pp_tx_done_irq;
+       irq->func = dpu_encoder_phys_cmd_pp_tx_done_irq;

        irq = &phys_enc->irq[INTR_IDX_RDPTR];
        irq->name = "pp_rd_ptr";
        irq->intr_idx = INTR_IDX_RDPTR;
-       irq->cb.func = dpu_encoder_phys_cmd_pp_rd_ptr_irq;
+       irq->func = dpu_encoder_phys_cmd_pp_rd_ptr_irq;

        irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
        irq->name = "underrun";
        irq->intr_idx = INTR_IDX_UNDERRUN;
-       irq->cb.func = dpu_encoder_phys_cmd_underrun_irq;
+       irq->func = dpu_encoder_phys_cmd_underrun_irq;

        atomic_set(&phys_enc->vblank_refcount, 0);
        atomic_set(&phys_enc->pending_kickoff_cnt, 0);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
index 185379b18572..437af231d6a4 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
@@ -725,20 +725,18 @@ struct dpu_encoder_phys *dpu_encoder_phys_vid_init(
        phys_enc->enc_spinlock = p->enc_spinlock;
        for (i = 0; i < INTR_IDX_MAX; i++) {
                irq = &phys_enc->irq[i];
-               INIT_LIST_HEAD(&irq->cb.list);
                irq->irq_idx = -EINVAL;
-               irq->cb.arg = phys_enc;
        }

        irq = &phys_enc->irq[INTR_IDX_VSYNC];
        irq->name = "vsync_irq";
        irq->intr_idx = INTR_IDX_VSYNC;
-       irq->cb.func = dpu_encoder_phys_vid_vblank_irq;
+       irq->func = dpu_encoder_phys_vid_vblank_irq;

        irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
        irq->name = "underrun";
        irq->intr_idx = INTR_IDX_UNDERRUN;
-       irq->cb.func = dpu_encoder_phys_vid_underrun_irq;
+       irq->func = dpu_encoder_phys_vid_underrun_irq;

        atomic_set(&phys_enc->vblank_refcount, 0);
        atomic_set(&phys_enc->pending_kickoff_cnt, 0);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
index d2b6dca487e3..7062e7f0e860 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
@@ -127,21 +127,17 @@ static const struct dpu_intr_reg dpu_intr_set[] = {
  */
static void dpu_core_irq_callback_handler(struct dpu_kms *dpu_kms, int irq_idx)
 {
-       struct dpu_irq_callback *cb;
-
        VERB("irq_idx=%d\n", irq_idx);

-       if (list_empty(&dpu_kms->hw_intr->irq_cb_tbl[irq_idx]))
+       if (!dpu_kms->hw_intr->irq_tbl[irq_idx].cb)
                DRM_ERROR("no registered cb, idx:%d\n", irq_idx);

-       atomic_inc(&dpu_kms->hw_intr->irq_counts[irq_idx]);
+       atomic_inc(&dpu_kms->hw_intr->irq_tbl[irq_idx].count);

        /*
         * Perform registered function callback
         */
-       list_for_each_entry(cb, &dpu_kms->hw_intr->irq_cb_tbl[irq_idx], list)
-               if (cb->func)
-                       cb->func(cb->arg, irq_idx);
+       
dpu_kms->hw_intr->irq_tbl[irq_idx].cb(dpu_kms->hw_intr->irq_tbl[irq_idx].arg,
irq_idx);
 }

 irqreturn_t dpu_core_irq(struct dpu_kms *dpu_kms)
@@ -389,24 +385,18 @@ struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,
                struct dpu_mdss_cfg *m)
 {
        struct dpu_hw_intr *intr;
+       int nirq = MDP_INTR_MAX * 32;

        if (!addr || !m)
                return ERR_PTR(-EINVAL);

-       intr = kzalloc(sizeof(*intr), GFP_KERNEL);
+       intr = kzalloc(struct_size(intr, irq_tbl, nirq), GFP_KERNEL);
        if (!intr)
                return ERR_PTR(-ENOMEM);

        __intr_offset(m, addr, &intr->hw);

-       intr->total_irqs = ARRAY_SIZE(dpu_intr_set) * 32;
-
-       intr->cache_irq_mask = kcalloc(ARRAY_SIZE(dpu_intr_set), sizeof(u32),
-                       GFP_KERNEL);
-       if (intr->cache_irq_mask == NULL) {
-               kfree(intr);
-               return ERR_PTR(-ENOMEM);
-       }
+       intr->total_irqs = nirq;

        intr->irq_mask = m->mdss_irqs;

@@ -417,31 +407,19 @@ struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,

 void dpu_hw_intr_destroy(struct dpu_hw_intr *intr)
 {
-       if (intr) {
-               kfree(intr->cache_irq_mask);
-
-               kfree(intr->irq_cb_tbl);
-               kfree(intr->irq_counts);
-
+       if (intr)
                kfree(intr);
-       }
 }

int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
-               struct dpu_irq_callback *register_irq_cb)
+               void (*irq_cb)(void *arg, int irq_idx),
+               void *irq_arg)
 {
        unsigned long irq_flags;
+       int ret;

-       if (!dpu_kms->hw_intr->irq_cb_tbl) {
-               DPU_ERROR("invalid params\n");
-               return -EINVAL;
-       }
-
-       if (!register_irq_cb || !register_irq_cb->func) {
-               DPU_ERROR("invalid irq_cb:%d func:%d\n",
-                               register_irq_cb != NULL,
-                               register_irq_cb ?
-                                       register_irq_cb->func != NULL : -1);
+       if (!irq_cb) {
+               DPU_ERROR("invalid ird_idx:%d irq_cb:%ps\n", irq_idx, irq_cb);
                return -EINVAL;
        }

@@ -453,39 +431,37 @@ int dpu_core_irq_register_callback(struct
dpu_kms *dpu_kms, int irq_idx,
        VERB("[%pS] irq_idx=%d\n", __builtin_return_address(0), irq_idx);

        spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
-       trace_dpu_core_irq_register_callback(irq_idx, register_irq_cb);
-       list_del_init(&register_irq_cb->list);
-       list_add_tail(&register_irq_cb->list,
-                       &dpu_kms->hw_intr->irq_cb_tbl[irq_idx]);
-       if (list_is_first(&register_irq_cb->list,
-                       &dpu_kms->hw_intr->irq_cb_tbl[irq_idx])) {
-               int ret = dpu_hw_intr_enable_irq_locked(
+
+       if (dpu_kms->hw_intr->irq_tbl[irq_idx].cb) {
+               spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
+
+               return -EBUSY;
+       }
Why is this check present? Ideally there should be only one callback registered.
+
+       trace_dpu_core_irq_register_callback(irq_idx, irq_cb);
+       dpu_kms->hw_intr->irq_tbl[irq_idx].arg = irq_arg;
+       dpu_kms->hw_intr->irq_tbl[irq_idx].cb = irq_cb;
+
+       ret = dpu_hw_intr_enable_irq_locked(
                                dpu_kms->hw_intr,
                                irq_idx);
-               if (ret)
-                       DPU_ERROR("Fail to enable IRQ for irq_idx:%d\n",
+       if (ret)
+               DPU_ERROR("Fail to enable IRQ for irq_idx:%d\n",
                                        irq_idx);
-       }
        spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);

        return 0;
 }

int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,
-               struct dpu_irq_callback *register_irq_cb)
+               void (*irq_cb)(void *arg, int irq_idx),
+               void *irq_arg)
 {
        unsigned long irq_flags;
+       int ret;

-       if (!dpu_kms->hw_intr->irq_cb_tbl) {
-               DPU_ERROR("invalid params\n");
-               return -EINVAL;
-       }
-
-       if (!register_irq_cb || !register_irq_cb->func) {
-               DPU_ERROR("invalid irq_cb:%d func:%d\n",
-                               register_irq_cb != NULL,
-                               register_irq_cb ?
-                                       register_irq_cb->func != NULL : -1);
+       if (!irq_cb) {
+               DPU_ERROR("invalid ird_idx:%d irq_cb:%ps\n", irq_idx, irq_cb);
                return -EINVAL;
        }

@@ -497,18 +473,23 @@ int dpu_core_irq_unregister_callback(struct
dpu_kms *dpu_kms, int irq_idx,
        VERB("[%pS] irq_idx=%d\n", __builtin_return_address(0), irq_idx);

        spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
-       trace_dpu_core_irq_unregister_callback(irq_idx, register_irq_cb);
-       list_del_init(&register_irq_cb->list);
-       /* empty callback list but interrupt is still enabled */
-       if (list_empty(&dpu_kms->hw_intr->irq_cb_tbl[irq_idx])) {
-               int ret = dpu_hw_intr_disable_irq_locked(
-                               dpu_kms->hw_intr,
-                               irq_idx);
-               if (ret)
-                       DPU_ERROR("Fail to disable IRQ for irq_idx:%d\n",
-                                       irq_idx);
-               VERB("irq_idx=%d ret=%d\n", irq_idx, ret);
+       trace_dpu_core_irq_unregister_callback(irq_idx, irq_cb);
+
+       if (WARN_ON(dpu_kms->hw_intr->irq_tbl[irq_idx].cb != irq_cb ||
+                   dpu_kms->hw_intr->irq_tbl[irq_idx].arg != irq_arg)) {
+               spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
+
+               return -EINVAL;
        }

Why do we need this check too? Any condition where this wont match?

+
+       ret = dpu_hw_intr_disable_irq_locked(dpu_kms->hw_intr, irq_idx);
+       if (ret)
+               DPU_ERROR("Fail to disable IRQ for irq_idx:%d: %d\n",
+                                       irq_idx, ret);
+
+       dpu_kms->hw_intr->irq_tbl[irq_idx].cb = NULL;
+       dpu_kms->hw_intr->irq_tbl[irq_idx].arg = NULL;
+
        spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);

        return 0;
@@ -518,24 +499,18 @@ int dpu_core_irq_unregister_callback(struct
dpu_kms *dpu_kms, int irq_idx,
 static int dpu_debugfs_core_irq_show(struct seq_file *s, void *v)
 {
        struct dpu_kms *dpu_kms = s->private;
-       struct dpu_irq_callback *cb;
        unsigned long irq_flags;
-       int i, irq_count, cb_count;
-
-       if (WARN_ON(!dpu_kms->hw_intr->irq_cb_tbl))
-               return 0;
+       int i, irq_count;
+       void *cb;

        for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++) {
                spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
-               cb_count = 0;
-               irq_count = atomic_read(&dpu_kms->hw_intr->irq_counts[i]);
-               list_for_each_entry(cb, &dpu_kms->hw_intr->irq_cb_tbl[i], list)
-                       cb_count++;
+               irq_count = atomic_read(&dpu_kms->hw_intr->irq_tbl[i].count);
+               cb = dpu_kms->hw_intr->irq_tbl[i].cb;
                spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);

-               if (irq_count || cb_count)
-                       seq_printf(s, "idx:%d irq:%d cb:%d\n",
-                                       i, irq_count, cb_count);
+               if (irq_count || cb)
+                       seq_printf(s, "idx:%d irq:%d cb:%ps\n", i, irq_count, 
cb);
        }

        return 0;
@@ -560,15 +535,8 @@ void dpu_core_irq_preinstall(struct dpu_kms *dpu_kms)
        dpu_disable_all_irqs(dpu_kms);
        pm_runtime_put_sync(&dpu_kms->pdev->dev);

-       /* Create irq callbacks for all possible irq_idx */
-       dpu_kms->hw_intr->irq_cb_tbl = kcalloc(dpu_kms->hw_intr->total_irqs,
-                       sizeof(struct list_head), GFP_KERNEL);
-       dpu_kms->hw_intr->irq_counts = kcalloc(dpu_kms->hw_intr->total_irqs,
-                       sizeof(atomic_t), GFP_KERNEL);
-       for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++) {
-               INIT_LIST_HEAD(&dpu_kms->hw_intr->irq_cb_tbl[i]);
-               atomic_set(&dpu_kms->hw_intr->irq_counts[i], 0);
-       }
+       for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++)
+               atomic_set(&dpu_kms->hw_intr->irq_tbl[i].count, 0);
 }

 void dpu_core_irq_uninstall(struct dpu_kms *dpu_kms)
@@ -577,7 +545,7 @@ void dpu_core_irq_uninstall(struct dpu_kms *dpu_kms)

        pm_runtime_get_sync(&dpu_kms->pdev->dev);
        for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++)
-               if (!list_empty(&dpu_kms->hw_intr->irq_cb_tbl[i]))
+               if (dpu_kms->hw_intr->irq_tbl[i].cb)
                        DPU_ERROR("irq_idx=%d still enabled/registered\n", i);

        dpu_clear_irqs(dpu_kms);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
index d50e78c9f148..9855e176b173 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
@@ -40,19 +40,21 @@ enum dpu_hw_intr_reg {
* @save_irq_status: array of IRQ status reg storage created during init
  * @total_irqs: total number of irq_idx mapped in the hw_interrupts
  * @irq_lock:         spinlock for accessing IRQ resources
- * @irq_cb_tbl:       array of IRQ callbacks lists
- * @irq_counts:       array of IRQ counts
+ * @irq_cb_tbl:       array of IRQ callbacks
  */
 struct dpu_hw_intr {
        struct dpu_hw_blk_reg_map hw;
-       u32 *cache_irq_mask;
+       u32 cache_irq_mask[MDP_INTR_MAX];
        u32 *save_irq_status;
        u32 total_irqs;
        spinlock_t irq_lock;
        unsigned long irq_mask;

-       struct list_head *irq_cb_tbl;
-       atomic_t *irq_counts;
+       struct {
+               void (*cb)(void *arg, int irq_idx);
+               void *arg;
+               atomic_t count;
+       } irq_tbl[];
 };

 /**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 775bcbda860f..d24dcd852d2e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -66,18 +66,6 @@

 #define DPU_NAME_SIZE  12

-/*
- * struct dpu_irq_callback - IRQ callback handlers
- * @list: list to callback
- * @func: intr handler
- * @arg: argument for the handler
- */
-struct dpu_irq_callback {
-       struct list_head list;
-       void (*func)(void *arg, int irq_idx);
-       void *arg;
-};
-
 struct dpu_kms {
        struct msm_kms base;
        struct drm_device *dev;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
index 37bba57675a8..1e2619556f93 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
@@ -876,25 +876,25 @@ TRACE_EVENT(dpu_pp_connect_ext_te,
 );

 DECLARE_EVENT_CLASS(dpu_core_irq_callback_template,
-       TP_PROTO(int irq_idx, struct dpu_irq_callback *callback),
+       TP_PROTO(int irq_idx, void *callback),
        TP_ARGS(irq_idx, callback),
        TP_STRUCT__entry(
                __field(        int,                            irq_idx )
-               __field(        struct dpu_irq_callback *,      callback)
+               __field(        void *,                         callback)
        ),
        TP_fast_assign(
                __entry->irq_idx = irq_idx;
                __entry->callback = callback;
        ),
-       TP_printk("irq_idx:%d callback:%pK", __entry->irq_idx,
+       TP_printk("irq_idx:%d callback:%ps", __entry->irq_idx,
                  __entry->callback)
 );
DEFINE_EVENT(dpu_core_irq_callback_template, dpu_core_irq_register_callback,
-       TP_PROTO(int irq_idx, struct dpu_irq_callback *callback),
+       TP_PROTO(int irq_idx, void *callback),
        TP_ARGS(irq_idx, callback)
 );
DEFINE_EVENT(dpu_core_irq_callback_template, dpu_core_irq_unregister_callback,
-       TP_PROTO(int irq_idx, struct dpu_irq_callback *callback),
+       TP_PROTO(int irq_idx, void *callback),
        TP_ARGS(irq_idx, callback)
 );

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