drm/amdkfd: Use real device for messages

kfd_chardev() doesn't provide much useful information in dev_... messages
on multi-GPU systems because there is only one KFD device, which doesn't
correspond to any particular GPU. Use the actual GPU device to indicate
the GPU that caused a message.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

@@ -104,11 +104,6 @@ void kfd_chardev_exit(void)
 	kfd_device = NULL;
 }
 
-struct device *kfd_chardev(void)
-{
-	return kfd_device;
-}
-
 
 static int kfd_open(struct inode *inode, struct file *filep)
 {

drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c

@@ -58,14 +58,14 @@ int kfd_interrupt_init(struct kfd_dev *kfd)
 		KFD_IH_NUM_ENTRIES * kfd->device_info.ih_ring_entry_size,
 		GFP_KERNEL);
 	if (r) {
-		dev_err(kfd_chardev(), "Failed to allocate IH fifo\n");
+		dev_err(kfd->adev->dev, "Failed to allocate IH fifo\n");
 		return r;
 	}
 
 	kfd->ih_wq = alloc_workqueue("KFD IH", WQ_HIGHPRI, 1);
 	if (unlikely(!kfd->ih_wq)) {
 		kfifo_free(&kfd->ih_fifo);
-		dev_err(kfd_chardev(), "Failed to allocate KFD IH workqueue\n");
+		dev_err(kfd->adev->dev, "Failed to allocate KFD IH workqueue\n");
 		return -ENOMEM;
 	}
 	spin_lock_init(&kfd->interrupt_lock);
@@ -117,7 +117,7 @@ bool enqueue_ih_ring_entry(struct kfd_dev *kfd,	const void *ih_ring_entry)
 	count = kfifo_in(&kfd->ih_fifo, ih_ring_entry,
 				kfd->device_info.ih_ring_entry_size);
 	if (count != kfd->device_info.ih_ring_entry_size) {
-		dev_dbg_ratelimited(kfd_chardev(),
+		dev_dbg_ratelimited(kfd->adev->dev,
 			"Interrupt ring overflow, dropping interrupt %d\n",
 			count);
 		return false;
@@ -148,7 +148,7 @@ static void interrupt_wq(struct work_struct *work)
 	uint32_t ih_ring_entry[KFD_MAX_RING_ENTRY_SIZE];
 
 	if (dev->device_info.ih_ring_entry_size > sizeof(ih_ring_entry)) {
-		dev_err_once(kfd_chardev(), "Ring entry too small\n");
+		dev_err_once(dev->adev->dev, "Ring entry too small\n");
 		return;
 	}
 

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

@@ -355,7 +355,6 @@ enum kfd_mempool {
 /* Character device interface */
 int kfd_chardev_init(void);
 void kfd_chardev_exit(void);
-struct device *kfd_chardev(void);
 
 /**
  * enum kfd_unmap_queues_filter - Enum for queue filters.