I/OAT: fix I/OAT for kexec
Under kexec, I/OAT initialization breaks over busy resources because the previous kernel did not release them. I'm not sure this fix can be considered a complete one but it works for me. I guess something similar to the *_remove method should occur there.. Signed-off-by: Dan Aloni <da-x@monatomic.org> Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>hifive-unleashed-5.1
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e00c5d8b4d
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428ed6024f
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@ -41,6 +41,7 @@
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/* internal functions */
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/* internal functions */
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static int __devinit ioat_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
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static int __devinit ioat_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
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static void ioat_shutdown(struct pci_dev *pdev);
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static void __devexit ioat_remove(struct pci_dev *pdev);
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static void __devexit ioat_remove(struct pci_dev *pdev);
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static int enumerate_dma_channels(struct ioat_device *device)
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static int enumerate_dma_channels(struct ioat_device *device)
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@ -557,6 +558,7 @@ static struct pci_driver ioat_pci_driver = {
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.name = "ioatdma",
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.name = "ioatdma",
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.id_table = ioat_pci_tbl,
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.id_table = ioat_pci_tbl,
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.probe = ioat_probe,
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.probe = ioat_probe,
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.shutdown = ioat_shutdown,
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.remove = __devexit_p(ioat_remove),
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.remove = __devexit_p(ioat_remove),
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};
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};
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@ -781,9 +783,20 @@ err_request_regions:
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err_set_dma_mask:
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err_set_dma_mask:
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pci_disable_device(pdev);
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pci_disable_device(pdev);
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err_enable_device:
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err_enable_device:
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printk(KERN_ERR "Intel(R) I/OAT DMA Engine initialization failed\n");
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return err;
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return err;
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}
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}
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static void ioat_shutdown(struct pci_dev *pdev)
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{
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struct ioat_device *device;
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device = pci_get_drvdata(pdev);
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dma_async_device_unregister(&device->common);
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}
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static void __devexit ioat_remove(struct pci_dev *pdev)
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static void __devexit ioat_remove(struct pci_dev *pdev)
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{
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{
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struct ioat_device *device;
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struct ioat_device *device;
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