Staging: vme: Add syncronize interrupts before removing callback
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>
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@ -480,6 +480,7 @@ int tsi148_request_irq(int level, int statid,
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void tsi148_free_irq(int level, int statid)
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{
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u32 tmp;
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struct pci_dev *pdev;
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/* Get semaphore */
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down(&(vme_irq));
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@ -495,6 +496,10 @@ void tsi148_free_irq(int level, int statid)
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tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
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tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
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iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEO);
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pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
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synchronize_irq(pdev->irq);
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}
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tsi148_bridge->irq[level - 1].callback[statid].func = NULL;
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