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This helps to fallback to 'kms_swrast' in case of bootup issues due to GPU. Add a modparam to support this. Reviewed-by: Dmitry Baryshkov Signed-off-by: Akhil P Oommen --- drivers/gpu/drm/msm/adreno/adreno_device.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/m= sm/adreno/adreno_device.c index 50945bfe9b4992118f23db3cd17ac348be9f9c9d..28f744f3caf7c59412aab06f912= cd09a01e185ea 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -24,6 +24,10 @@ bool disable_acd; MODULE_PARM_DESC(disable_acd, "Forcefully disable GPU ACD"); module_param_unsafe(disable_acd, bool, 0400); =20 +static bool skip_gpu; +MODULE_PARM_DESC(no_gpu, "Disable GPU driver register (0=3Denable GPU driv= er register (default), 1=3Dskip GPU driver register"); +module_param(skip_gpu, bool, 0400); + extern const struct adreno_gpulist a2xx_gpulist; extern const struct adreno_gpulist a3xx_gpulist; extern const struct adreno_gpulist a4xx_gpulist; @@ -184,6 +188,9 @@ bool adreno_has_gpu(struct device_node *node) uint32_t chip_id; int ret; =20 + if (skip_gpu) + return false; + ret =3D find_chipid(node, &chip_id); if (ret) return false; @@ -404,10 +411,16 @@ static struct platform_driver adreno_driver =3D { =20 void __init adreno_register(void) { + if (skip_gpu) + return; + platform_driver_register(&adreno_driver); } =20 void __exit adreno_unregister(void) { + if (skip_gpu) + return; + platform_driver_unregister(&adreno_driver); } --=20 2.50.1