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scsi: ibmvscsi_tgt: Fix dma_unmap_sg() nents value

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[ Upstream commit 023a293b9c ]

The dma_unmap_sg() functions should be called with the same nents as the
dma_map_sg(), not the value the map function returned.

Fixes: 88a678bbc3 ("ibmvscsis: Initial commit of IBM VSCSI Tgt Driver")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Link: https://lore.kernel.org/r/20250630111803.94389-2-fourier.thomas@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thomas Fourier
2025-08-15 12:08:54 +02:00
committed by Greg Kroah-Hartman
parent 5b63d6dec5
commit 214f94ee5d
1 changed files with 4 additions and 2 deletions
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drivers/scsi/ibmvscsi_tgt/libsrp.c
+4 -2
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@@ -184,7 +184,8 @@ static int srp_direct_data(struct ibmvscsis_cmd *cmd, struct srp_direct_buf *md,
err = rdma_io(cmd, sg, nsg, md, 1, dir, len);
if (dma_map)
dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL);
dma_unmap_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents,
DMA_BIDIRECTIONAL);
return err;
}
@@ -256,7 +257,8 @@ rdma:
err = rdma_io(cmd, sg, nsg, md, nmd, dir, len);
if (dma_map)
dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL);
dma_unmap_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents,
DMA_BIDIRECTIONAL);
free_mem:
if (token && dma_map) {