03_sil24_add-test-for-PCI-fault.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 <[EMAIL PROTECTED]>
sata_sil24.c | 6 ++++++
1 files changed, 6 insertions(+)
Index: work/drivers/scsi/sata_sil24.c
===================================================================
--- work.orig/drivers/scsi/sata_sil24.c 2005-07-30 19:13:40.000000000 +0900
+++ work/drivers/scsi/sata_sil24.c 2005-07-30 19:13:40.000000000 +0900
@@ -539,6 +539,12 @@ static irqreturn_t sil24_interrupt(int i
status = readl(hpriv->host_base + HOST_IRQ_STAT);
+ if (status == 0xffffffff) {
+ printk(KERN_ERR DRV_NAME ": IRQ status == 0xffffffff, "
+ "possible PCI fault or device removal\n");
+ goto out;
+ }
+
if (!(status & IRQ_STAT_4PORTS))
goto out;
-
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