Applied to drm-misc-next.

On 10/23/26 03:37, Umio-Yasuno - coelacanth_dream wrote:
On Friday, October 23rd, 2026 at 0:58, Max Zhen <[email protected]> wrote:

The released out-of-tree amdxdna driver uses amdxdna_accel_driver as the
drm-engine key string, which is consumed by several applications.

Use the same key string in the upstream driver to maintain compatibility
with the out-of-tree driver.

Reported-by: Umio Yasuno <[email protected]>
Closes: https://github.com/amd/xdna-driver/issues/1754
Fixes: 489a8539ca6f ("accel/amdxdna: Expose NPU device busy time via DRM 
fdinfo")
Signed-off-by: Max Zhen <[email protected]>
Reviewed-by: Umio Yasuno <[email protected]>

Thanks!

---
  Documentation/accel/amdxdna/amdnpu.rst  | 2 +-
  drivers/accel/amdxdna/amdxdna_pci_drv.c | 4 ++--
  2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/accel/amdxdna/amdnpu.rst 
b/Documentation/accel/amdxdna/amdnpu.rst
index d72af1b51ccf..b0cc481c73ae 100644
--- a/Documentation/accel/amdxdna/amdnpu.rst
+++ b/Documentation/accel/amdxdna/amdnpu.rst
@@ -289,7 +289,7 @@ Example of the output showing the implemented key value 
pairs:
          drm-driver:   amdxdna_accel_driver
          drm-client-id:        3219
          drm-pdev:     0000:c5:00.1
-        drm-engine-npu: 14003870 ns
+        drm-engine-amdxdna_accel_driver:        14003870 ns
          amdxdna_accel_driver-heap-alloc:      60 KiB
          amdxdna_accel_driver-internal-alloc:  67588 KiB
          amdxdna_accel_driver-external-alloc:  0
diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.c 
b/drivers/accel/amdxdna/amdxdna_pci_drv.c
index edf807c93144..f233eb70a295 100644
--- a/drivers/accel/amdxdna/amdxdna_pci_drv.c
+++ b/drivers/accel/amdxdna/amdxdna_pci_drv.c
@@ -284,9 +284,9 @@ static void amdxdna_show_fdinfo(struct drm_printer *p, 
struct drm_file *filp)
  {
        struct amdxdna_client *client = filp->driver_priv;
        size_t heap_usage, external_usage, internal_usage;
-       char *drv_name = filp->minor->dev->driver->name;
+       char *drv_name = "amdxdna_accel_driver";

-       drm_printf(p, "drm-engine-npu:\t%llu ns\n",
+       drm_printf(p, "drm-engine-%s:\t%llu ns\n", drv_name,
                   amdxdna_io_stats_busy_time_ns(client));

        mutex_lock(&client->mm_lock);
--
2.34.1



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