@@ -2074,6 +2074,12 @@ static int tegra_dc_init(struct host1x_client *client)
goto cleanup;
}
+ /*
+ * Inherit the DMA parameters (such as maximum segment size) from the
+ * parent device.
+ */
+ client->dev->dma_parms = client->parent->dma_parms;
+
return 0;
cleanup:
@@ -2097,6 +2103,9 @@ static int tegra_dc_exit(struct host1x_client *client)
if (!tegra_dc_has_window_groups(dc))
return 0;
+ /* avoid a dangling pointer just in case this disappears */
+ client->dev->dma_parms = NULL;
+
devm_free_irq(dc->dev, dc->irq, dc);
err = tegra_dc_rgb_exit(dc);
@@ -214,6 +214,12 @@ static int vic_init(struct host1x_client *client)
if (err < 0)
goto free_syncpt;
+ /*
+ * Inherit the DMA parameters (such as maximum segment size) from the
+ * parent device.
+ */
+ client->dev->dma_parms = client->parent->dma_parms;
+
return 0;
free_syncpt:
@@ -236,6 +242,9 @@ static int vic_exit(struct host1x_client *client)
struct vic *vic = to_vic(drm);
int err;
+ /* avoid a dangling pointer just in case this disappears */
+ client->dev->dma_parms = NULL;
+
err = tegra_drm_unregister_client(tegra, drm);
if (err < 0)
return err;