enic: set DMA mask to 47 bit
[ Upstream commitpull/10/head322eaa06d5
] In commit624dbf55a3
("driver/net: enic: Try DMA 64 first, then failover to DMA") DMA mask was changed from 40 bits to 64 bits. Hardware actually supports only 47 bits. Fixes:624dbf55a3
("driver/net: enic: Try DMA 64 first, then failover to DMA") Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
0d2eb422fe
commit
cbf561634d
|
@ -2703,11 +2703,11 @@ static int enic_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 64-bit first, and
|
||||
* limitation for the device. Try 47-bit first, and
|
||||
* fail to 32-bit.
|
||||
*/
|
||||
|
||||
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
|
||||
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(47));
|
||||
if (err) {
|
||||
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
||||
if (err) {
|
||||
|
@ -2721,10 +2721,10 @@ static int enic_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(64));
|
||||
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(47));
|
||||
if (err) {
|
||||
dev_err(dev, "Unable to obtain %u-bit DMA "
|
||||
"for consistent allocations, aborting\n", 64);
|
||||
"for consistent allocations, aborting\n", 47);
|
||||
goto err_out_release_regions;
|
||||
}
|
||||
using_dac = 1;
|
||||
|
|
Loading…
Reference in New Issue