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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
Dan Aloni 2007-03-08 09:57:36 -08:00 committed by Dan Williams
parent e00c5d8b4d
commit 428ed6024f
1 changed files with 13 additions and 0 deletions
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13
drivers/dma/ioatdma.c
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@ -41,6 +41,7 @@
/* internal functions */
static int __devinit ioat_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static void ioat_shutdown(struct pci_dev *pdev);
static void __devexit ioat_remove(struct pci_dev *pdev);
static int enumerate_dma_channels(struct ioat_device *device)
@ -557,6 +558,7 @@ static struct pci_driver ioat_pci_driver = {
.name = "ioatdma",
.id_table = ioat_pci_tbl,
.probe = ioat_probe,
.shutdown = ioat_shutdown,
.remove = __devexit_p(ioat_remove),
};
@ -781,9 +783,20 @@ err_request_regions:
err_set_dma_mask:
pci_disable_device(pdev);
err_enable_device:
printk(KERN_ERR "Intel(R) I/OAT DMA Engine initialization failed\n");
return err;
}
static void ioat_shutdown(struct pci_dev *pdev)
{
struct ioat_device *device;
device = pci_get_drvdata(pdev);
dma_async_device_unregister(&device->common);
}
static void __devexit ioat_remove(struct pci_dev *pdev)
{
struct ioat_device *device;