From 56de8357049c707e5c881cc9d0e5ffed76388423 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 18 Feb 2019 08:34:19 +0100 Subject: [PATCH] scsi: lpfc: fix calls to dma_set_mask_and_coherent() The change to use dma_set_mask_and_coherent() incorrectly made a second call with the 32 bit DMA mask value when the call with the 64 bit DMA mask value succeeded. This resulted in NVMe/FC connections failing due to corrupted data buffers, and various other SCSI/FCP I/O errors. Fixes: f30e1bfd6154 ("scsi: lpfc: use dma_set_mask_and_coherent") Cc: Suggested-by: Don Dutile Signed-off-by: Ewan D. Milne Signed-off-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Reviewed-by: Ewan D. Milne Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_init.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index c1c36812c3d2..a588dfad4b11 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -7361,15 +7361,18 @@ lpfc_sli_pci_mem_setup(struct lpfc_hba *phba) unsigned long bar0map_len, bar2map_len; int i, hbq_count; void *ptr; - int error = -ENODEV; + int error; if (!pdev) - return error; + return -ENODEV; /* Set the device DMA mask size */ - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) || - dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) + error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (error) + error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (error) return error; + error = -ENODEV; /* Get the bus address of Bar0 and Bar2 and the number of bytes * required by each mapping. @@ -9742,11 +9745,13 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba) uint32_t if_type; if (!pdev) - return error; + return -ENODEV; /* Set the device DMA mask size */ - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) || - dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) + error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (error) + error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (error) return error; /*