Add check for the return value of dma_set_max_seg_size() and return
the error if it fails in order to catch the error.
Fixes: ddfd4ab6bb08 ("drm/exynos: Fix dma_parms allocation")
Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_dma.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dma.c b/drivers/gpu/drm/exynos/exynos_drm_dma.c
index e2c7373f20c6..0f942186f3ff 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dma.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dma.c
@@ -51,7 +51,10 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev,
return -EINVAL;
}
- dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
+ ret = dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
+
if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) {
/*
* Keep the original DMA mapping of the sub-device and
--
2.25.1
