From: Lyude Paul <lyude@redhat.com>
To: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org
Cc: Karol Herbst <kherbst@redhat.com>,
Danilo Krummrich <dakr@redhat.com>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
Dave Airlie <airlied@redhat.com>, Ben Skeggs <bskeggs@redhat.com>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] drm/nouveau/dp: Fix incorrect return code in r535_dp_aux_xfer()
Date: Fri, 15 Mar 2024 17:20:56 -0400 [thread overview]
Message-ID: <20240315212104.776936-1-lyude@redhat.com> (raw)
I've recently been seeing some unexplained GSP errors on my RTX 6000 from
failed aux transactions:
[ 132.915867] nouveau 0000:1f:00.0: gsp: cli:0xc1d00002 obj:0x00730000
ctrl cmd:0x00731341 failed: 0x0000ffff
While the cause of these is not yet clear, these messages made me notice
that the aux transactions causing these transactions were succeeding - not
failing. As it turns out, this is because we're currently not returning the
correct variable when r535_dp_aux_xfer() hits an error - causing us to
never propagate GSP errors for failed aux transactions to userspace.
So, let's fix that.
Fixes: 4ae3a20102b2 ("nouveau/gsp: don't free ctrl messages on errors")
Signed-off-by: Lyude Paul <lyude@redhat.com>
---
drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
index 6a0a4d3b8902d..027867c2a8c5b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
@@ -1080,7 +1080,7 @@ r535_dp_aux_xfer(struct nvkm_outp *outp, u8 type, u32 addr, u8 *data, u8 *psize)
ret = nvkm_gsp_rm_ctrl_push(&disp->rm.objcom, &ctrl, sizeof(*ctrl));
if (ret) {
nvkm_gsp_rm_ctrl_done(&disp->rm.objcom, ctrl);
- return PTR_ERR(ctrl);
+ return ret;
}
memcpy(data, ctrl->data, size);
--
2.43.0
next reply other threads:[~2024-03-15 21:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-15 21:20 Lyude Paul [this message]
2024-03-15 22:45 ` [PATCH] drm/nouveau/dp: Fix incorrect return code in r535_dp_aux_xfer() David Airlie
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