lkml.org 
[lkml]   [2019]   [Nov]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[net v3 3/5] net: sgi: ioc3-eth: simplify setting the DMA mask
Date
From: Christoph Hellwig <hch@lst.de>

There is no need to fall back to a lower mask these days, the DMA mask
just communicates the hardware supported features.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 27 +++++++--------------------
1 file changed, 7 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 8a684d882e63..dc2e22652b55 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -1173,26 +1173,14 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct ioc3 *ioc3;
unsigned long ioc3_base, ioc3_size;
u32 vendor, model, rev;
- int err, pci_using_dac;
+ int err;

/* Configure DMA attributes. */
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
- if (!err) {
- pci_using_dac = 1;
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
- if (err < 0) {
- pr_err("%s: Unable to obtain 64 bit DMA for consistent allocations\n",
- pci_name(pdev));
- goto out;
- }
- } else {
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
- if (err) {
- pr_err("%s: No usable DMA configuration, aborting.\n",
- pci_name(pdev));
- goto out;
- }
- pci_using_dac = 0;
+ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+ if (err) {
+ pr_err("%s: No usable DMA configuration, aborting.\n",
+ pci_name(pdev));
+ goto out;
}

if (pci_enable_device(pdev))
@@ -1204,8 +1192,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto out_disable;
}

- if (pci_using_dac)
- dev->features |= NETIF_F_HIGHDMA;
+ dev->features |= NETIF_F_HIGHDMA;

err = pci_request_regions(pdev, "ioc3");
if (err)
--
2.16.4
\
 
 \ /
  Last update: 2019-11-04 11:46    [W:0.052 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site