redonkable/alistair23-linux
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Staging: vme: Add syncronize interrupts before removing callback

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As identified by Jiri, there is no syncronisation before callback is removed.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Martyn Welch 2009-08-11 13:50:49 +01:00 committed by Greg Kroah-Hartman
parent 51a569f757
commit 75155020c8
1 changed files with 5 additions and 0 deletions
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5
drivers/staging/vme/bridges/vme_tsi148.c
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@ -480,6 +480,7 @@ int tsi148_request_irq(int level, int statid,
void tsi148_free_irq(int level, int statid)
{
u32 tmp;
struct pci_dev *pdev;
/* Get semaphore */
down(&(vme_irq));
@ -495,6 +496,10 @@ void tsi148_free_irq(int level, int statid)
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEO);
pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
synchronize_irq(pdev->irq);
}
tsi148_bridge->irq[level - 1].callback[statid].func = NULL;