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[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>
This commit is contained in:
Tejun Heo 2005-08-17 13:08:52 +09:00 committed by Jeff Garzik
parent 3cc4571c41
commit 06460aeaa2
1 changed files with 6 additions and 0 deletions
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6
drivers/scsi/sata_sil24.c
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@ -527,6 +527,12 @@ static irqreturn_t sil24_interrupt(int irq, void *dev_instance, struct pt_regs *
status = readl(hpriv->host_base + HOST_IRQ_STAT);
if (status == 0xffffffff) {
printk(KERN_ERR DRV_NAME ": IRQ status == 0xffffffff, "
"PCI fault or device removal?\n");
goto out;
}
if (!(status & IRQ_STAT_4PORTS))
goto out;