From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: [PATCH 2/4] hptiop: fix calls to dma_set_mask_and_coherent() Date: Wed, 13 Feb 2019 12:42:32 +0100 Message-ID: <20190213114234.67275-3-hare@suse.de> References: <20190213114234.67275-1-hare@suse.de> Return-path: In-Reply-To: <20190213114234.67275-1-hare@suse.de> Sender: stable-owner@vger.kernel.org To: Christoph Hellwig Cc: "Martin K. Petersen" , James Bottomley , linux-scsi@vger.kernel.org, Ewan Milne , Hannes Reinecke , stable@vger.kernel.org, Hannes Reinecke List-Id: linux-scsi@vger.kernel.org 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: 453cd3700ca3 ("scsi: hptiop: use dma_set_mask") Cc: Suggested-by: Ewan D. Milne Signed-off-by: Hannes Reinecke --- drivers/scsi/hptiop.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c index 3eedfd4f8f57..251c084a6ff0 100644 --- a/drivers/scsi/hptiop.c +++ b/drivers/scsi/hptiop.c @@ -1292,6 +1292,7 @@ static int hptiop_probe(struct pci_dev *pcidev, const struct pci_device_id *id) dma_addr_t start_phy; void *start_virt; u32 offset, i, req_size; + int rc; dprintk("hptiop_probe(%p)\n", pcidev); @@ -1308,9 +1309,12 @@ static int hptiop_probe(struct pci_dev *pcidev, const struct pci_device_id *id) /* Enable 64bit DMA if possible */ iop_ops = (struct hptiop_adapter_ops *)id->driver_data; - if (dma_set_mask(&pcidev->dev, - DMA_BIT_MASK(iop_ops->hw_dma_bit_mask)) || - dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32))) { + rc = dma_set_mask(&pcidev->dev, + DMA_BIT_MASK(iop_ops->hw_dma_bit_mask)); + if (rc) + rc = dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32)); + + if (rc) { printk(KERN_ERR "hptiop: fail to set dma_mask\n"); goto disable_pci_device; } -- 2.16.4