Messages in this thread Patch in this message | | | From | Wesley Sheng <> | Subject | [PATCH 2/5] switchtec: Set DMA coherent mask in Switchtec driver | Date | Thu, 15 Nov 2018 17:44:01 +0800 |
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From: Boris Glimcher <Boris.Glimcher@emc.com>
Switchtec hardware supports 64-bit DMA, set the correct DMA mask. This allows the CMA to allocate larger buffers for memory windows.
Signed-off-by: Boris Glimcher <Boris.Glimcher@emc.com> Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com> --- drivers/pci/switch/switchtec.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index d2bca2d..480107e 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -1237,6 +1237,10 @@ static int switchtec_init_pci(struct switchtec_dev *stdev, if (rc) return rc; + rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); + if (rc) + return rc; + pci_set_master(pdev); stdev->mmio = pcim_iomap_table(pdev)[0]; -- 2.7.4
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