04_sil24_remove-irq-disable-on-spurious-interrupt.patch
If interrupt occurs on a disabled port, the driver used to
mask the port's interrupt, but we don't know if such action is
necessary yet and that's not what other drives do. So, just
do nothing and tell IRQ subsystem that it's not our interrupt.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
sata_sil24.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
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
@@ -553,17 +553,12 @@ static irqreturn_t sil24_interrupt(int i
for (i = 0; i < host_set->n_ports; i++)
if (status & (1 << i)) {
struct ata_port *ap = host_set->ports[i];
- if (ap && !(ap->flags & ATA_FLAG_PORT_DISABLED))
+ if (ap && !(ap->flags & ATA_FLAG_PORT_DISABLED)) {
sil24_host_intr(host_set->ports[i]);
- else {
- u32 tmp;
- printk(KERN_WARNING DRV_NAME
- ": spurious interrupt from port %d\n",
i);
- tmp = readl(hpriv->host_base + HOST_CTRL);
- tmp &= ~(1 << i);
- writel(tmp, hpriv->host_base + HOST_CTRL);
- }
- handled++;
+ handled++;
+ } else
+ printk(KERN_ERR DRV_NAME
+ ": interrupt from disabled port %d\n",
i);
}
spin_unlock(&host_set->lock);
-
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