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authorShannon Nelson <shannon.nelson@intel.com>2007-10-18 03:07:13 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:32 -0700
commitdfe2299e7b35a0adfc87f04d3e725ccc508d7626 (patch)
tree5dbcd9290ebf4f4830d736df5b3324f0146bb6b0 /drivers/dma/ioat.c
parent7df7cf0676060d778486359676734447347e1caf (diff)
I/OAT: clean up of dca provider start and stop
Don't start ioat_dca if ioat_dma didn't start, and then stop ioat_dca before stopping ioat_dma. Since the ioat_dma side does the pci device work, This takes care of ioat_dca trying to use a bad device reference. Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/dma/ioat.c')
-rw-r--r--drivers/dma/ioat.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/dma/ioat.c b/drivers/dma/ioat.c
index 54fdeb7c494..a45872f32d5 100644
--- a/drivers/dma/ioat.c
+++ b/drivers/dma/ioat.c
@@ -71,7 +71,7 @@ static int ioat_setup_functionality(struct pci_dev *pdev, void __iomem *iobase)
switch (version) {
case IOAT_VER_1_2:
device->dma = ioat_dma_probe(pdev, iobase);
- if (ioat_dca_enabled)
+ if (device->dma && ioat_dca_enabled)
device->dca = ioat_dca_init(pdev, iobase);
break;
default:
@@ -85,17 +85,16 @@ static void ioat_shutdown_functionality(struct pci_dev *pdev)
{
struct ioat_device *device = pci_get_drvdata(pdev);
- if (device->dma) {
- ioat_dma_remove(device->dma);
- device->dma = NULL;
- }
-
if (device->dca) {
unregister_dca_provider(device->dca);
free_dca_provider(device->dca);
device->dca = NULL;
}
+ if (device->dma) {
+ ioat_dma_remove(device->dma);
+ device->dma = NULL;
+ }
}
static struct pci_driver ioat_pci_driver = {