From d5ad0e3dfe74f465a218bde84efb25c72b3e51c4 Mon Sep 17 00:00:00 2001
From: Thierry Reding <treding@nvidia.com>
Date: Fri, 8 Feb 2019 13:10:41 +0100
Subject: drm/tegra: vic: Inherit DMA mask from host1x
Git-commit: d5ad0e3dfe74f465a218bde84efb25c72b3e51c4
Patch-mainline: v5.5-rc1
References: bsc#1152472
VIC, just like all other host1x clients, has the same addressing range
as its parent host1x device. Inherit the DMA mask to reflect that.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/tegra/vic.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c
index 748798f2cdc8..d60e479cde92 100644
--- a/drivers/gpu/drm/tegra/vic.c
+++ b/drivers/gpu/drm/tegra/vic.c
@@ -385,6 +385,13 @@ static int vic_probe(struct platform_device *pdev)
struct vic *vic;
int err;
+ /* inherit DMA mask from host1x parent */
+ err = dma_coerce_mask_and_coherent(dev, *dev->parent->dma_mask);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);
+ return err;
+ }
+
vic = devm_kzalloc(dev, sizeof(*vic), GFP_KERNEL);
if (!vic)
return -ENOMEM;
--
2.28.0