[PATCH v6 01/10] tee: tee_device_alloc(): copy dma_mask from parent device

Jens Wiklander
2025-03-05T13:06:43Z

If a parent device is supplied to tee_device_alloc(), copy the dma_mask
field into the new device. This avoids future warnings when mapping a
DMA-buf for the device.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
---
drivers/tee/tee_core.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index d113679b1e2d..685afcaa3ea1 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -922,6 +922,8 @@ struct tee_device *tee_device_alloc(const struct tee_desc *teedesc,
teedev->dev.class = &tee_class;
teedev->dev.release = tee_release_device;
teedev->dev.parent = dev;
+ if (dev)
+ teedev->dev.dma_mask = dev->dma_mask;

teedev->dev.devt = MKDEV(MAJOR(tee_devt), teedev->id);

--
2.43.0