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drm/amdgpu: fix rmmio iounmap skipped on device removal

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amdgpu_pci_remove() calls drm_dev_unplug() before fini_sw(), so
drm_dev_enter() is already false there and the iounmap() guarded by it
is skipped. This .remove path runs on both hot-unplug and plain rmmod,
so the register BAR ioremap mapping leaks one instance per unload.

Unmap rmmio unconditionally (guard only on non-NULL) and drop the now
unused idx.

Fixes: 62d5f9f711 ("drm/amdgpu: Unmap MMIO mappings when device is not unplugged")
Signed-off-by: Chengjun Yao <Chengjun.Yao@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit dd6f86a97260e5207d3329ad03aa89fdad61b1e6)
Cc: stable@vger.kernel.org
This commit is contained in:
Chengjun Yao 2026-09-08 10:15:43 +08:00 committed by Alex Deucher
parent 7f9caa70ae
commit 5155002b03
1 changed files with 2 additions and 4 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -4335,7 +4335,7 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev)
void amdgpu_device_fini_sw(struct amdgpu_device *adev)
{
int i, idx;
int i;
bool px;
amdgpu_device_ip_fini(adev);
@ -4377,11 +4377,9 @@ void amdgpu_device_fini_sw(struct amdgpu_device *adev)
if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
vga_client_unregister(adev->pdev);
if (drm_dev_enter(adev_to_drm(adev), &idx)) {
if (adev->rmmio) {
iounmap(adev->rmmio);
adev->rmmio = NULL;
drm_dev_exit(idx);
}
if (IS_ENABLED(CONFIG_PERF_EVENTS))