diff options
| author | Dave Airlie <airlied@redhat.com> | 2026-02-24 13:17:50 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-19 16:15:19 +0100 |
| commit | 24639553a016578222ac597db924dfb6fa5ec8b5 (patch) | |
| tree | 326009204c154d9e37a379133bc7e1f782c1f313 /include/net/aligned_data.h | |
| parent | 37e3ed7f6bfa8cce2c700c43692fff4d866aa7f3 (diff) | |
nouveau/dpcd: return EBUSY for aux xfer if the device is asleep
commit 8f3c6f08ababad2e3bdd239728cf66a9949446b4 upstream.
If we have runtime suspended, and userspace wants to use /dev/drm_dp_*
then just tell it the device is busy instead of crashing in the GSP
code.
WARNING: CPU: 2 PID: 565741 at drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/rpc.c:164 r535_gsp_msgq_wait+0x9a/0xb0 [nouveau]
CPU: 2 UID: 0 PID: 565741 Comm: fwupd Not tainted 6.18.10-200.fc43.x86_64 #1 PREEMPT(lazy)
Hardware name: LENOVO 20QTS0PQ00/20QTS0PQ00, BIOS N2OET65W (1.52 ) 08/05/2024
RIP: 0010:r535_gsp_msgq_wait+0x9a/0xb0 [nouveau]
This is a simple fix to get backported. We should probably engineer a
proper power domain solution to wake up devices and keep them awake
while fw updates are happening.
Cc: stable@vger.kernel.org
Fixes: 8894f4919bc4 ("drm/nouveau: register a drm_dp_aux channel for each dp connector")
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/20260224031750.791621-1-airlied@gmail.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions