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ethercat
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CCAT: Support kernels before 3.14 without dma_set_mask_and_coherent().

This commit is contained in:
Florian Pose 2014-10-27 14:54:02 +01:00
parent 0de73a15ad
commit 480d497644
1 changed files with 11 additions and 0 deletions
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11
devices/ccat/module.c
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@ -22,6 +22,7 @@
#include <linux/etherdevice.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/version.h>
#include "module.h"
#include "netdev.h"
#include "update.h"
@ -228,6 +229,7 @@ static int ccat_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return status;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)
if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
pr_debug("64 bit DMA supported, pci rev: %u\n", revision);
} else if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
@ -235,6 +237,15 @@ static int ccat_probe(struct pci_dev *pdev, const struct pci_device_id *id)
} else {
pr_warn("No suitable DMA available, pci rev: %u\n", revision);
}
#else
if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
pr_debug("64 bit DMA supported, pci rev: %u\n", revision);
} else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
pr_debug("32 bit DMA supported, pci rev: %u\n", revision);
} else {
pr_warn("No suitable DMA available, pci rev: %u\n", revision);
}
#endif
if (ccat_bar_init(&ccatdev->bar[0], 0, pdev)) {
pr_warn("initialization of bar0 failed.\n");