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AHCI: Make distinct names for ports in /proc/interrupts 

Currently all interrupts assigned to AHCI ports show up in
'/proc/interrupts' as 'ahci'. This fix adds port numbers as
suffixes and hence makes the descriptions distinct.

Reported-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Alexander Gordeev 2013-05-22 08:53:48 +09:00 committed by Tejun Heo
parent 966fbe193f
commit b29900e625
3 changed files with 14 additions and 1 deletions
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4
drivers/ata/ahci.c
View File

@ -1142,9 +1142,11 @@ int ahci_host_activate(struct ata_host *host, int irq, unsigned int n_msis)
return rc; return rc;
for (i = 0; i < host->n_ports; i++) { for (i = 0; i < host->n_ports; i++) {
struct ahci_port_priv *pp = host->ports[i]->private_data;
rc = devm_request_threaded_irq(host->dev, rc = devm_request_threaded_irq(host->dev,
irq + i, ahci_hw_interrupt, ahci_thread_fn, IRQF_SHARED, irq + i, ahci_hw_interrupt, ahci_thread_fn, IRQF_SHARED,
dev_driver_string(host->dev), host->ports[i]); pp->irq_desc, host->ports[i]);
if (rc) if (rc)
goto out_free_irqs; goto out_free_irqs;
} }

1
drivers/ata/ahci.h
View File

@ -306,6 +306,7 @@ struct ahci_port_priv {
int fbs_last_dev; /* save FBS.DEV of last FIS */ int fbs_last_dev; /* save FBS.DEV of last FIS */
/* enclosure management info per PM slot */ /* enclosure management info per PM slot */
struct ahci_em_priv em_priv[EM_MAX_SLOTS]; struct ahci_em_priv em_priv[EM_MAX_SLOTS];
char *irq_desc; /* desc in /proc/interrupts */
}; };
struct ahci_host_priv { struct ahci_host_priv {

10
drivers/ata/libahci.c
View File

@ -2234,6 +2234,16 @@ static int ahci_port_start(struct ata_port *ap)
if (!pp) if (!pp)
return -ENOMEM; return -ENOMEM;
if (ap->host->n_ports > 1) {
pp->irq_desc = devm_kzalloc(dev, 8, GFP_KERNEL);
if (!pp->irq_desc) {
devm_kfree(dev, pp);
return -ENOMEM;
}
snprintf(pp->irq_desc, 8,
"%s%d", dev_driver_string(dev), ap->port_no);
}
/* check FBS capability */ /* check FBS capability */
if ((hpriv->cap & HOST_CAP_FBS) && sata_pmp_supported(ap)) { if ((hpriv->cap & HOST_CAP_FBS) && sata_pmp_supported(ap)) {
void __iomem *port_mmio = ahci_port_base(ap); void __iomem *port_mmio = ahci_port_base(ap);