| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.20 83/88] scsi: csiostor: fix calls to dma_set_mask_and_coherent() | Date | Mon, 4 Mar 2019 09:23:06 +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 732f3238dcf27acb92959a99b7923dc49395980e 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: c22b332d811b ("scsi: csiostor: switch to 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/csiostor/csio_init.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/scsi/csiostor/csio_init.c +++ b/drivers/scsi/csiostor/csio_init.c @@ -210,8 +210,11 @@ csio_pci_init(struct pci_dev *pdev, int 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))) { + rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (rv) + rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (rv) { + rv = -ENODEV; dev_err(&pdev->dev, "No suitable DMA available.\n"); goto err_release_regions; }
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