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authorDan Aloni <da\\-x@monatomic.org>2007-03-08 20:57:36 +0300
committerDan Williams <dan.j.williams@intel.com>2007-07-12 03:10:53 +0400
commit428ed6024fa74a271142f3257966e9b5e1cb37a1 (patch)
treeb74af2d50f292ec377a567368e0dd41fe439d1b7 /drivers/dma
parente00c5d8b4d800b95b72b3f072e1d55d7c7034702 (diff)
downloadlinux-428ed6024fa74a271142f3257966e9b5e1cb37a1.tar.xz
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>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ioatdma.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/dma/ioatdma.c b/drivers/dma/ioatdma.c
index b3fca1200a73..c4209af4fde4 100644
--- a/drivers/dma/ioatdma.c
+++ b/drivers/dma/ioatdma.c
@@ -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;