diff options
| author | Rob Clark | 2020-07-15 12:07:30 -0700 |
|---|---|---|
| committer | Rob Clark | 2020-07-31 06:45:56 -0700 |
| commit | 520c651f3b209b667a8a9cec43348868d6c24b4d (patch) | |
| tree | 79325caa598a4802006c9fdffa4d1928e14b7c37 | |
| parent | 7b149f2bbf8cded435a182fa308066d077926470 (diff) | |
drm/msm/adreno: fix gpu probe if no interconnect-names
If there is no interconnect-names, but there is an interconnects
property, then of_icc_get(dev, "gfx-mem"); would return an error
rather than NULL.
Also, if there is no interconnect-names property, there will never
be a ocmem path. But of_icc_get(dev, "ocmem") would return -EINVAL
instead of -ENODATA. Just don't bother trying in this case.
v2: explicity check for interconnect-names property
Fixes: 08af4769c7d2 ("drm/msm: handle for EPROBE_DEFER for of_icc_get")
Fixes: 00bb9243d346 ("drm/msm/gpu: add support for ocmem interconnect path")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 0527e85184e1..e23641a5ec84 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -1003,22 +1003,23 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, if (ret) return ret; - /* Check for an interconnect path for the bus */ - gpu->icc_path = of_icc_get(dev, "gfx-mem"); - if (!gpu->icc_path) { - /* - * Keep compatbility with device trees that don't have an - * interconnect-names property. - */ + /* + * The legacy case, before "interconnect-names", only has a + * single interconnect path which is equivalent to "gfx-mem" + */ + if (!of_find_property(dev->of_node, "interconnect-names", NULL)) { gpu->icc_path = of_icc_get(dev, NULL); + } else { + gpu->icc_path = of_icc_get(dev, "gfx-mem"); + gpu->ocmem_icc_path = of_icc_get(dev, "ocmem"); } + if (IS_ERR(gpu->icc_path)) { ret = PTR_ERR(gpu->icc_path); gpu->icc_path = NULL; return ret; } - gpu->ocmem_icc_path = of_icc_get(dev, "ocmem"); if (IS_ERR(gpu->ocmem_icc_path)) { ret = PTR_ERR(gpu->ocmem_icc_path); gpu->ocmem_icc_path = NULL; @@ -1026,6 +1027,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, if (ret != -ENODATA) return ret; } + return 0; } |