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 33d6667416c73eb0b37f0f10f56d825b15389dab 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: b000bced5739 ("scsi: 3w-9xxx: 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-9xxx.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)
--- a/drivers/scsi/3w-9xxx.c +++ b/drivers/scsi/3w-9xxx.c @@ -2010,7 +2010,7 @@ static int twa_probe(struct pci_dev *pde struct Scsi_Host *host = NULL; TW_Device_Extension *tw_dev; unsigned long mem_addr, mem_len; - int retval = -ENODEV; + int retval;
retval = pci_enable_device(pdev); if (retval) { @@ -2021,8 +2021,10 @@ static int twa_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, 0x23, "Failed to set dma mask"); retval = -ENODEV; goto out_disable_device; @@ -2241,8 +2243,10 @@ static int twa_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, 0x40, "Failed to set dma mask during resume"); retval = -ENODEV; goto out_disable_device;