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

Sumit Garg
2025-03-10T08:56:36Z

On Wed, Mar 05, 2025 at 02:04:07PM +0100, Jens Wiklander wrote:
> 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(+)
>

Reviewed-by: Sumit Garg <sumit.garg@kernel.org>

-Sumit

> 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
>