libata: more verbose request_irq() failure
Suggested by Jarek P.
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 76b633a..51b3a0d 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -5293,6 +5293,7 @@
unsigned int count = 0, i;
struct device *dev = ent->dev;
struct ata_host_set *host_set;
+ int rc;
DPRINTK("ENTER\n");
/* alloc a container for our list of ATA ports (buses) */
@@ -5344,9 +5345,13 @@
goto err_free_ret;
/* obtain irq, that is shared between channels */
- if (request_irq(ent->irq, ent->port_ops->irq_handler, ent->irq_flags,
- DRV_NAME, host_set))
+ rc = request_irq(ent->irq, ent->port_ops->irq_handler, ent->irq_flags,
+ DRV_NAME, host_set);
+ if (rc) {
+ dev_printk(KERN_ERR, dev, "irq %lu request failed: %d\n",
+ ent->irq, rc);
goto err_out;
+ }
/* perform each probe synchronously */
DPRINTK("probe begin\n");