drm/i915/gt: convert tasklets to use new tasklet_setup() API

In preparation for unconditionally passing the struct tasklet_struct
pointer to all tasklet callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/gpu/drm/i915/gt/intel_lrc.c

@@ -3130,9 +3130,9 @@ static bool preempt_timeout(const struct intel_engine_cs *const engine)
  * Check the unread Context Status Buffers and manage the submission of new
  * contexts to the ELSP accordingly.
  */
-static void execlists_submission_tasklet(unsigned long data)
+static void execlists_submission_tasklet(struct tasklet_struct *t)
 {
-	struct intel_engine_cs * const engine = (struct intel_engine_cs *)data;
+	struct intel_engine_cs * const engine = from_tasklet(engine, t, execlists.tasklet);
 	bool timeout = preempt_timeout(engine);
 
 	process_csb(engine);
@@ -5113,8 +5113,7 @@ int intel_execlists_submission_setup(struct intel_engine_cs *engine)
 	struct intel_uncore *uncore = engine->uncore;
 	u32 base = engine->mmio_base;
 
-	tasklet_init(&engine->execlists.tasklet,
-		     execlists_submission_tasklet, (unsigned long)engine);
+	tasklet_setup(&engine->execlists.tasklet, execlists_submission_tasklet);
 	timer_setup(&engine->execlists.timer, execlists_timeslice, 0);
 	timer_setup(&engine->execlists.preempt, execlists_preempt, 0);
 
@@ -5509,9 +5508,9 @@ static intel_engine_mask_t virtual_submission_mask(struct virtual_engine *ve)
 	return mask;
 }
 
-static void virtual_submission_tasklet(unsigned long data)
+static void virtual_submission_tasklet(struct tasklet_struct *t)
 {
-	struct virtual_engine * const ve = (struct virtual_engine *)data;
+	struct virtual_engine * const ve = from_tasklet(ve, t, base.execlists.tasklet);
 	const int prio = READ_ONCE(ve->base.execlists.queue_priority_hint);
 	intel_engine_mask_t mask;
 	unsigned int n;
@@ -5724,9 +5723,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
 
 	INIT_LIST_HEAD(virtual_queue(ve));
 	ve->base.execlists.queue_priority_hint = INT_MIN;
-	tasklet_init(&ve->base.execlists.tasklet,
-		     virtual_submission_tasklet,
-		     (unsigned long)ve);
+	tasklet_setup(&ve->base.execlists.tasklet, virtual_submission_tasklet);
 
 	intel_context_init(&ve->context, &ve->base);