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drm/exynos: fimd: check error status for drm_iommu_attach_device 

check error status for drm_iommu_attach_device() and make sure
it propagates till the caller.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Inki Dae <daeinki@gmail.com>
This commit is contained in:
Ajay Kumar 2015-01-12 01:57:07 +09:00 committed by Inki Dae
parent adf5691c33
commit efa75bcdad
1 changed files with 15 additions and 2 deletions
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17
drivers/gpu/drm/exynos/exynos_drm_fimd.c
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@ -296,12 +296,19 @@ static int fimd_ctx_initialize(struct fimd_context *ctx,
/* attach this sub driver to iommu mapping if supported. */
if (is_drm_iommu_supported(ctx->drm_dev)) {
int ret;
/*
* If any channel is already active, iommu will throw
* a PAGE FAULT when enabled. So clear any channel if enabled.
*/
fimd_clear_channel(ctx->crtc);
drm_iommu_attach_device(ctx->drm_dev, ctx->dev);
ret = drm_iommu_attach_device(ctx->drm_dev, ctx->dev);
if (ret) {
DRM_ERROR("drm_iommu_attach failed.\n");
return ret;
}
}
return 0;
@ -1056,6 +1063,7 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
{
struct fimd_context *ctx = dev_get_drvdata(dev);
struct drm_device *drm_dev = data;
int ret;
ctx->crtc = exynos_drm_crtc_create(drm_dev, ctx->pipe,
EXYNOS_DISPLAY_TYPE_LCD,
@ -1063,7 +1071,12 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
if (IS_ERR(ctx->crtc))
return PTR_ERR(ctx->crtc);
fimd_ctx_initialize(ctx, drm_dev);
ret = fimd_ctx_initialize(ctx, drm_dev);
if (ret) {
DRM_ERROR("fimd_ctx_initialize failed.\n");
return ret;
}
if (ctx->display)
exynos_drm_create_enc_conn(drm_dev, ctx->display);