[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>
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 0f810cd..c9318bd 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -527,6 +527,12 @@
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;
