This patch removes the AHCI_HFLAG_EDGE_IRQ support from libahci.
The upcoming patches will have the flexibility to override
irq handlers in the LLD's. Controller's implementing a EDGE trigger
latch can implement their own interrupt handler inside the driver.
Signed-off-by: Suman Tripathi <stripathi@xxxxxxx>
---
drivers/ata/ahci.h | 3 +--
drivers/ata/ahci_xgene.c | 2 +-
drivers/ata/libahci.c | 40 ----------------------------------------
3 files changed, 2 insertions(+), 43 deletions(-)
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index a4faa43..e9b57e8 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -240,8 +240,7 @@ enum {
error-handling stage) */
AHCI_HFLAG_NO_DEVSLP = (1 << 17), /* no device sleep */
AHCI_HFLAG_NO_FBS = (1 << 18), /* no FBS */
- AHCI_HFLAG_EDGE_IRQ = (1 << 19), /* HOST_IRQ_STAT behaves as
- Edge Triggered */
+
#ifdef CONFIG_PCI_MSI
AHCI_HFLAG_MULTI_MSI = (1 << 20), /* multiple PCI MSIs */
AHCI_HFLAG_MULTI_MSIX = (1 << 21), /* per-port MSI-X */
diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c
index e2c6d9e..892ec74 100644
--- a/drivers/ata/ahci_xgene.c
+++ b/drivers/ata/ahci_xgene.c
@@ -779,7 +779,7 @@ skip_clk_phy:
hpriv->flags = AHCI_HFLAG_NO_NCQ;
break;
case XGENE_AHCI_V2:
- hpriv->flags |= AHCI_HFLAG_YES_FBS | AHCI_HFLAG_EDGE_IRQ;
+ hpriv->flags |= AHCI_HFLAG_YES_FBS;
break;
default:
break;
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index eda3cf2..08be136 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1843,43 +1843,6 @@ static u32 ahci_handle_port_intr(struct ata_host *host, u32 irq_masked)
return handled;
}
-static irqreturn_t ahci_single_edge_irq_intr(int irq, void *dev_instance)
-{
- struct ata_host *host = dev_instance;
- struct ahci_host_priv *hpriv;
- unsigned int rc = 0;
- void __iomem *mmio;
- u32 irq_stat, irq_masked;
-
- VPRINTK("ENTER\n");
-
- hpriv = host->private_data;
- mmio = hpriv->mmio;
-
- /* sigh. 0xffffffff is a valid return from h/w */
- irq_stat = readl(mmio + HOST_IRQ_STAT);
- if (!irq_stat)
- return IRQ_NONE;
-
- irq_masked = irq_stat & hpriv->port_map;
-
- spin_lock(&host->lock);
-
- /*
- * HOST_IRQ_STAT behaves as edge triggered latch meaning that
- * it should be cleared before all the port events are cleared.
- */
- writel(irq_stat, mmio + HOST_IRQ_STAT);
-
- rc = ahci_handle_port_intr(host, irq_masked);
-
- spin_unlock(&host->lock);
-
- VPRINTK("EXIT\n");
-
- return IRQ_RETVAL(rc);
-}
-
static irqreturn_t ahci_single_level_irq_intr(int irq, void *dev_instance)
{
struct ata_host *host = dev_instance;
@@ -2507,9 +2470,6 @@ int ahci_host_activate(struct ata_host *host, struct scsi_host_template *sht)
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);
--
1.7.1
--
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