From b6ad7debf5ab3e581b5cb0f5c94e404ec968bd5b Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Mon, 11 Nov 2024 13:41:24 +1000 Subject: [PATCH] nouveau: handle EBUSY and EAGAIN for GSP aux errors. The upper layer transfer functions expect EBUSY as a return for when retries should be done. Fix the AUX error translation, but also check for both errors in a few places. Fixes: eb284f4b3781 ("drm/nouveau/dp: Honor GSP link training retry timeouts") Cc: stable@vger.kernel.org Reviewed-by: Lyude Paul Signed-off-by: Dave Airlie Link: https://patchwork.freedesktop.org/patch/msgid/20241111034126.2028401-1-airlied@gmail.com --- drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c | 2 +- drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c index 027867c2a8c5..8f9aa3463c3c 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c @@ -992,7 +992,7 @@ r535_dp_train_target(struct nvkm_outp *outp, u8 target, bool mst, u8 link_nr, u8 ctrl->data = data; ret = nvkm_gsp_rm_ctrl_push(&disp->rm.objcom, &ctrl, sizeof(*ctrl)); - if (ret == -EAGAIN && ctrl->retryTimeMs) { + if ((ret == -EAGAIN || ret == -EBUSY) && ctrl->retryTimeMs) { /* * Device (likely an eDP panel) isn't ready yet, wait for the time specified * by GSP before retrying again diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c index cf58f9da9139..d586aea30898 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c @@ -78,7 +78,7 @@ r535_rpc_status_to_errno(uint32_t rpc_status) switch (rpc_status) { case 0x55: /* NV_ERR_NOT_READY */ case 0x66: /* NV_ERR_TIMEOUT_RETRY */ - return -EAGAIN; + return -EBUSY; case 0x51: /* NV_ERR_NO_MEMORY */ return -ENOMEM; default: @@ -601,7 +601,7 @@ r535_gsp_rpc_rm_alloc_push(struct nvkm_gsp_object *object, void *argv, u32 repc) if (rpc->status) { ret = ERR_PTR(r535_rpc_status_to_errno(rpc->status)); - if (PTR_ERR(ret) != -EAGAIN) + if (PTR_ERR(ret) != -EAGAIN && PTR_ERR(ret) != -EBUSY) nvkm_error(&gsp->subdev, "RM_ALLOC: 0x%x\n", rpc->status); } else { ret = repc ? rpc->params : NULL; @@ -660,7 +660,7 @@ r535_gsp_rpc_rm_ctrl_push(struct nvkm_gsp_object *object, void **argv, u32 repc) if (rpc->status) { ret = r535_rpc_status_to_errno(rpc->status); - if (ret != -EAGAIN) + if (ret != -EAGAIN && ret != -EBUSY) nvkm_error(&gsp->subdev, "cli:0x%08x obj:0x%08x ctrl cmd:0x%08x failed: 0x%08x\n", object->client->object.handle, object->handle, rpc->cmd, rpc->status); } -- 2.49.0