[PATCH 4.20 84/88] scsi: 3w-9xxx: fix calls to dma_set_mask_and_coherent()

[Greg Kroah-Hartman]

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hannes Reinecke <h...@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: <sta...@vger.kernel.org>
Signed-off-by: Hannes Reinecke <h...@suse.com>
Reviewed-by: Christoph Hellwig <h...@lst.de>
Reviewed-by: Ewan D. Milne <emi...@redhat.com>
Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gre...@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;