Hello.
On 02/05/2016 12:20 AM, suman Tripathi wrote:
From: Suman Tripathi <stripathi@xxxxxxx>
This patch implements the capability to override the generic
ahci interrupt handler so that the LDD drivers can implement
AHCI.
there own custom interrupt handler routines.
s/there/their/.
Signed-off-by: Suman Tripathi <stripathi@xxxxxxx>
---
drivers/ata/ahci.h | 2 ++
drivers/ata/libahci.c | 32 +++++++++++++++++++++++---------
2 files changed, 25 insertions(+), 9 deletions(-)
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index a4faa43..3d883ee 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -360,6 +360,7 @@ struct ahci_host_priv {
* be overridden anytime before the host is activated.
*/
void (*start_engine)(struct ata_port *ap);
+ irqreturn_t (*ahci_irq_intr)(int irq, void *dev_instance);
The 'ahci_irq_intr' name is somewhat tautological.
[...]
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index eda3cf2..5d3035a 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
[...]
@@ -2504,15 +2505,28 @@ int ahci_host_activate(struct ata_host *host, struct scsi_host_template *sht)
struct ahci_host_priv *hpriv = host->private_data;
int irq = hpriv->irq;
int rc;
+ irqreturn_t (*ahci_irq_handler)(int irq, void *dev_instance);
- if (hpriv->flags & (AHCI_HFLAG_MULTI_MSI | AHCI_HFLAG_MULTI_MSIX))
- rc = ahci_host_activate_multi_irqs(host, sht);
- else if (hpriv->flags & AHCI_HFLAG_EDGE_IRQ)
- rc = ata_host_activate(host, irq, ahci_single_edge_irq_intr,
- IRQF_SHARED, sht);
- else
- rc = ata_host_activate(host, irq, ahci_single_level_irq_intr,
- IRQF_SHARED, sht);
+ ahci_irq_handler = hpriv->ahci_irq_intr;
+
+ if (hpriv->flags & (AHCI_HFLAG_MULTI_MSI | AHCI_HFLAG_MULTI_MSIX)) {
+ if (!ahci_irq_handler)
+ rc = ahci_host_activate_multi_irqs(host, sht);
+ else
+ dev_warn(host->dev, "both AHCI_HFLAG_MULTI_MSI flag set \
+ and custom irq handler implemented\n");
+
+ } else {
+ if (!ahci_irq_handler) {
Why not *else* *if* on a single line?
[...]
MBR, Sergei
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