Avoid waiting for pending dma invoke in spinlock

Currently, spinlock is acquired and wait state
is entered for dma_invoke to complete. This scenario
leads to watchdog bark for threads waiting to acquire
spinlock. This change is to avoid waiting for dma_invoke
completion after acquiring spinlock.

Change-Id: I9443fd8bfda77194103a871e4ad0295f79cf3034
Signed-off-by: Ansa Ahmed <[email protected]>

dsp/adsprpc.c

@@ -5782,8 +5782,17 @@ static int fastrpc_file_free(struct fastrpc_file *fl)
 
 	spin_lock_irqsave(&fl->apps->hlock, irq_flags);
 	is_locked = true;
-	if (fl->is_dma_invoke_pend)
-		wait_for_completion(&fl->dma_invoke);
+	if (!fl->is_dma_invoke_pend)
+		goto skip_dmainvoke_wait;
+	is_locked = false;
+	spin_unlock_irqrestore(&fl->apps->hlock, irq_flags);
+	wait_for_completion(&fl->dma_invoke);
+
+skip_dmainvoke_wait:
+	if (!is_locked) {
+		spin_lock_irqsave(&fl->apps->hlock, irq_flags);
+		is_locked = true;
+	}
 	if (!fl->is_ramdump_pend)
 		goto skip_dump_wait;
 	is_locked = false;