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@xxxxxxxx>
Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
---
drivers/ata/ahci.c | 5 +++--
drivers/ata/ahci.h | 1 +
drivers/ata/libahci.c | 10 ++++++++++
3 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index e4d915f..32dd3e2 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1148,10 +1148,11 @@ int ahci_host_activate(struct ata_host *host, int irq, unsigned int n_msis,
return -EINVAL;
for (i = 0; i < n_irqs; i++) {
+ struct ahci_port_priv *pp = host->ports[i]->private_data;
+
rc = devm_request_threaded_irq(host->dev, irq + i,
ahci_multi_irqs_intr, ahci_port_thread_fn,
- IRQF_SHARED, dev_driver_string(host->dev),
- host->ports[i]);
+ IRQF_SHARED, pp->irq_desc, host->ports[i]);
if (rc)
goto out_free_irqs;
}
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index ed1fbc8..7386dfd 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -305,6 +305,7 @@ struct ahci_port_priv {
int fbs_last_dev; /* save FBS.DEV of last FIS */
/* enclosure management info per PM slot */
struct ahci_em_priv em_priv[EM_MAX_SLOTS];
+ char *irq_desc; /* desc in /proc/interrupts */
};
struct ahci_host_priv {
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 68b3bdd..2b56769 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -2251,6 +2251,16 @@ static int ahci_port_start(struct ata_port *ap)
if (!pp)
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 */
if ((hpriv->cap & HOST_CAP_FBS) && sata_pmp_supported(ap)) {
void __iomem *port_mmio = ahci_port_base(ap);
--
1.7.7.6
--
Regards,
Alexander Gordeev
agordeev@xxxxxxxxxx
--
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