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drm/xe/pf: Check for fence error on VRAM save/restore

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The code incorrectly assumes that the VRAM save/restore fence is valid.
Fix it by checking for error.

Fixes: 49cf1b9b60 ("drm/xe/pf: Handle VRAM migration data as part of PF control")
Suggested-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20251114122339.1791026-1-michal.winiarski@intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
(cherry picked from commit 78ff838a8a)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
This commit is contained in:
Michał Winiarski
2025-11-14 13:23:39 +01:00
committed by Thomas Hellström
parent 0fd2f9f39a
commit 551801b521
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.c
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@@ -571,6 +571,10 @@ static int pf_save_vram_chunk(struct xe_gt *gt, unsigned int vfid,
fence = __pf_save_restore_vram(gt, vfid,
src_vram, src_vram_offset,
data->bo, 0, size, true);
if (IS_ERR(fence)) {
ret = PTR_ERR(fence);
goto fail;
}
ret = dma_fence_wait_timeout(fence, false, PF_VRAM_SAVE_RESTORE_TIMEOUT);
dma_fence_put(fence);
@@ -654,6 +658,11 @@ static int pf_restore_vf_vram_mig_data(struct xe_gt *gt, unsigned int vfid,
fence = __pf_save_restore_vram(gt, vfid, vram, data->hdr.offset,
data->bo, 0, data->hdr.size, false);
if (IS_ERR(fence)) {
ret = PTR_ERR(fence);
goto err;
}
ret = dma_fence_wait_timeout(fence, false, PF_VRAM_SAVE_RESTORE_TIMEOUT);
dma_fence_put(fence);
if (!ret) {