[PATCH] sil24: add testing for PCI fault
03_sil24_add-pci-fault-check.patch On entry to interrupt handler, PORT_SLOT_STAT register is read first. Check if PCI fault or device removal has occurred by testing the value for 0xffffffff. Signed-off-by: Tejun Heo <htejun@gmail.com> sata_sil24.c | 6 ++++++ 1 files changed, 6 insertions(+) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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@ -527,6 +527,12 @@ static irqreturn_t sil24_interrupt(int irq, void *dev_instance, struct pt_regs *
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status = readl(hpriv->host_base + HOST_IRQ_STAT);
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if (status == 0xffffffff) {
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printk(KERN_ERR DRV_NAME ": IRQ status == 0xffffffff, "
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"PCI fault or device removal?\n");
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goto out;
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}
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if (!(status & IRQ_STAT_4PORTS))
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goto out;
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