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[SCSI] fnic: On system with >1.1TB RAM, VIC fails multipath after boot up 

Issue was seen when SCSI buffer address is more than 40 bits in system
with more than 1.1TB RAM. When SCSI buffer is passed to VIC, it is failing
to map to correct buffer address, as DMA mask is set to 40 bits in driver
initialization. Corrected DMA_MASK from 40-bits to 64-bits to avoid masking
41-64 bits addresses.

Signed-off-by: Brian Uchino <buchino@cisco.com>
Signed-off-by: Hiral Patel <hiralpat@cisco.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Brian Uchino 2013-09-09 13:31:47 -07:00 committed by James Bottomley
parent 1adee04011
commit 87aa619c17
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/scsi/fnic/fnic_main.c
View File

@ -581,10 +581,10 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_master(pdev);
/* Query PCI controller on system for DMA addressing
* limitation for the device. Try 40-bit first, and
* limitation for the device. Try 64-bit first, and
* fail to 32-bit.
*/
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
if (err) {
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
@ -601,10 +601,10 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out_release_regions;
}
} else {
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Unable to obtain 40-bit DMA "
"Unable to obtain 64-bit DMA "
"for consistent allocations, aborting.\n");
goto err_out_release_regions;
}