Am Sonntag, den 16.03.2014, 00:30 +0100 schrieb Peter Senna Tschudin:
> 1. For the 64 bits dma mask use dma_set_mask_and_coherent instead of
> dma_set_mask and dma_set_coherent_mask.
>
> 2. For the 32 bits dma mask dma_set_coherent_mask is only called if
> dma_set_mask fails, which is unusual. Assuming this as a bug, fixes
> it by replacing calls to dma_set_mask and dma_set_coherent_mask by a
> call to dma_set_mask_and_coherent.
>
Tested-by: Jonas Hahnfeld <hah...@hahnjo.de>
> Signed-off-by: Peter Senna Tschudin <peter.se...@gmail.com>
> ---
>
> Tested by compilation only.
>
> Change from V1: Updated commit message.
>
> drivers/net/ethernet/atheros/alx/main.c | 14 ++++----------
> 1 file changed, 4 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/ethernet/atheros/alx/main.c
> b/drivers/net/ethernet/atheros/alx/main.c
> index 2e45f6e..380d249 100644
> --- a/drivers/net/ethernet/atheros/alx/main.c
> +++ b/drivers/net/ethernet/atheros/alx/main.c
> @@ -1248,19 +1248,13 @@ static int alx_probe(struct pci_dev *pdev, const
> struct pci_device_id *ent)
> * shared register for the high 32 bits, so only a single, aligned,
> * 4 GB physical address range can be used for descriptors.
> */
> - if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
> - !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
> + if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
> dev_dbg(&pdev->dev, "DMA to 64-BIT addresses\n");
> } else {
> - err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
> + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
> if (err) {
> - err = dma_set_coherent_mask(&pdev->dev,
> - DMA_BIT_MASK(32));
> - if (err) {
> - dev_err(&pdev->dev,
> - "No usable DMA config, aborting\n");
> - goto out_pci_disable;
> - }
> + dev_err(&pdev->dev, "No usable DMA config, aborting\n");
> + goto out_pci_disable;
> }
> }
>
No obvious problems noticed on my ASUS N56VZ.
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