scsi: mpi3mr: Fix config page DMA memory leak

[ Upstream commit 7d2b02172b6a2ae6aecd7ef6480b9c4bf3dc59f4 ]

A fix for:

DMA-API: pci 0000:83:00.0: device driver has pending DMA allocations while released from device [count=1]

Fixes: 32d457d5a2af ("scsi: mpi3mr: Add framework to issue config requests")
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20230302234336.25456-3-thenzl@redhat.com
Acked-by: Sathya Prakash Veerichetty <sathya.prakash@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c
index 2d46a0b..f6b7263 100644 (file)
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c
@@ -4351,7 +4351,11 @@ void mpi3mr_free_mem(struct mpi3mr_ioc *mrioc)
                    mrioc->admin_req_base, mrioc->admin_req_dma);
                mrioc->admin_req_base = NULL;
        }
-
+       if (mrioc->cfg_page) {
+               dma_free_coherent(&mrioc->pdev->dev, mrioc->cfg_page_sz,
+                   mrioc->cfg_page, mrioc->cfg_page_dma);
+               mrioc->cfg_page = NULL;
+       }
        if (mrioc->pel_seqnum_virt) {
                dma_free_coherent(&mrioc->pdev->dev, mrioc->pel_seqnum_sz,
                    mrioc->pel_seqnum_virt, mrioc->pel_seqnum_dma);