From: Hannes Reinecke <hare@suse.de>
Date: Mon, 18 Feb 2019 08:34:19 +0100
Subject: [PATCH] scsi: lpfc: fix calls to dma_set_mask_and_coherent()
References: bsc#1136217,jsc#SLE-4722
Git-commit: 56de8357049c707e5c881cc9d0e5ffed76388423
Patch-mainline: v5.0
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: <stable@vger.kernel.org>
Suggested-by: Don Dutile <ddutile@redhat.com>
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
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 ed0bc14ad058..6ea71a284d94 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -7699,15 +7699,18 @@ 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.
@@ -10058,11 +10061,13 @@ 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;
/*
--
2.16.4