The private data field of a page group response descriptor is set then
immediately cleared in prq_event_thread(). Fix this by moving clearing
code up.
Fixes: 5b438f4ba315d ("iommu/vt-d: Support page request in scalable mode")
Cc: Jacob Pan <jacob.jun....@linux.intel.com>
Reviewed-by: Liu Yi L <yi.l....@intel.com>
Signed-off-by: Lu Baolu <baolu...@linux.intel.com>
---
drivers/iommu/intel/svm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index d76cc79f3496..f688c5f29b1a 100644
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -1021,12 +1021,12 @@ static irqreturn_t prq_event_thread(int irq, void *d)
QI_PGRP_RESP_TYPE;
resp.qw1 = QI_PGRP_IDX(req->prg_index) |
QI_PGRP_LPIG(req->lpig);
+ resp.qw2 = 0;
+ resp.qw3 = 0;
if (req->priv_data_present)
memcpy(&resp.qw2, req->priv_data,
sizeof(req->priv_data));
- resp.qw2 = 0;
- resp.qw3 = 0;
qi_submit_sync(iommu, &resp, 1, 0);
}
prq_advance:
--
2.25.1
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