From: Govindarajulu Varadarajan <gvaradar@cisco.com>
To: davem@davemloft.net, netdev@vger.kernel.org
Cc: benve@cisco.com, Govindarajulu Varadarajan <gvaradar@cisco.com>
Subject: [PATCH net-next] enic: set DMA mask to 47 bit
Date: Tue, 22 May 2018 06:37:24 -0700 [thread overview]
Message-ID: <20180522133724.1188-1-gvaradar@cisco.com> (raw)
In commit 624dbf55a359b ("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: 624dbf55a359b("driver/net: enic: Try DMA 64 first, then failover
to DMA")
Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
---
drivers/net/ethernet/cisco/enic/enic_main.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index 81684acf52af..8a8b12b720ef 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -2747,11 +2747,11 @@ 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) {
@@ -2765,10 +2765,10 @@ 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;
--
2.17.0
next reply other threads:[~2018-05-22 20:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-22 13:37 Govindarajulu Varadarajan [this message]
2018-05-23 18:37 ` [PATCH net-next] enic: set DMA mask to 47 bit David Miller
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