| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.20 82/88] scsi: 3w-sas: fix calls to dma_set_mask_and_coherent() | Date | Mon, 4 Mar 2019 09:23:05 +0100 |
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4.20-stable review patch. If anyone has any objections, please let me know.
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From: Hannes Reinecke <hare@suse.de>
commit 1feb3b02294994ee3a067c9b6cda6c244fd0ee18 upstream.
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.
Fixes: b1fa122930c4 ("scsi: 3w-sas: fully convert to the generic DMA API") Cc: <stable@vger.kernel.org> 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/scsi/3w-sas.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
--- a/drivers/scsi/3w-sas.c +++ b/drivers/scsi/3w-sas.c @@ -1573,8 +1573,10 @@ static int twl_probe(struct pci_dev *pde pci_set_master(pdev); pci_try_set_mwi(pdev); - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) || - dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) { + retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (retval) + retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (retval) { TW_PRINTK(host, TW_DRIVER, 0x18, "Failed to set dma mask"); retval = -ENODEV; goto out_disable_device; @@ -1805,8 +1807,10 @@ static int twl_resume(struct pci_dev *pd pci_set_master(pdev); pci_try_set_mwi(pdev); - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) || - dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) { + retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (retval) + retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (retval) { TW_PRINTK(host, TW_DRIVER, 0x25, "Failed to set dma mask during resume"); retval = -ENODEV; goto out_disable_device;
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