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[PATCH] sil24: remove irq disable code on spurious interrupt
02_sil24_remove-irq-disable-on-spurious-intr.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@gmail.com> sata_sil24.c | 15 +++++---------- 1 files changed, 5 insertions(+), 10 deletions(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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@ -535,17 +535,12 @@ static irqreturn_t sil24_interrupt(int irq, void *dev_instance, struct pt_regs *
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for (i = 0; i < host_set->n_ports; i++)
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for (i = 0; i < host_set->n_ports; i++)
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if (status & (1 << i)) {
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if (status & (1 << i)) {
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struct ata_port *ap = host_set->ports[i];
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struct ata_port *ap = host_set->ports[i];
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if (ap && !(ap->flags & ATA_FLAG_PORT_DISABLED))
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if (ap && !(ap->flags & ATA_FLAG_PORT_DISABLED)) {
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sil24_host_intr(host_set->ports[i]);
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sil24_host_intr(host_set->ports[i]);
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else {
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handled++;
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u32 tmp;
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} else
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printk(KERN_WARNING DRV_NAME
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printk(KERN_ERR DRV_NAME
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": spurious interrupt from port %d\n", i);
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": interrupt from disabled port %d\n", i);
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tmp = readl(hpriv->host_base + HOST_CTRL);
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tmp &= ~(1 << i);
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writel(tmp, hpriv->host_base + HOST_CTRL);
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}
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handled++;
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}
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}
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spin_unlock(&host_set->lock);
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spin_unlock(&host_set->lock);
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