diff mbox

[v4,2/4] AHCI: Move host activation code into ahci_host_activate()

Message ID 39cff5287f4fcc33d0f00f89cb2337c5a5ec22b6.1411648623.git.agordeev@redhat.com
State Not Applicable
Delegated to: David Miller
Headers show

Commit Message

Alexander Gordeev Sept. 25, 2014, 1:13 p.m. UTC 
Currently host activation done by calling either function
ahci_host_activate() or ata_host_activate(). Consolidate
the code by only calling ahci_host_activate() for all AHCI
devices.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Cc: linux-ide@vger.kernel.org
---
 drivers/ata/acard-ahci.c       |  3 +-
 drivers/ata/ahci.c             | 66 +--------------------------------
 drivers/ata/ahci.h             |  6 +--
 drivers/ata/libahci.c          | 84 +++++++++++++++++++++++++++++++++++++++---
 drivers/ata/libahci_platform.c |  3 +-
 5 files changed, 83 insertions(+), 79 deletions(-)

Comments

Tejun Heo Sept. 28, 2014, 4:04 p.m. UTC | #1 
On Thu, Sep 25, 2014 at 03:13:22PM +0200, Alexander Gordeev wrote:
> -/**
> - *	ahci_host_activate - start AHCI host, request IRQs and register it
> - *	@host: target ATA host
> - *	@irq: base IRQ number to request
> - *	@irq_handler: irq_handler used when requesting IRQs
> - *	@irq_flags: irq_flags used when requesting IRQs
> - *
> - *	Similar to ata_host_activate, but requests IRQs according to AHCI-1.1
> - *	when multiple MSIs were allocated. That is one MSI per port, starting
> - *	from @irq.
> - *
> - *	LOCKING:
> - *	Inherited from calling layer (may sleep).
> - *
> - *	RETURNS:
> - *	0 on success, -errno otherwise.
> - */
> -int ahci_host_activate(struct ata_host *host, int irq)
> -{
> -	int i, rc;
> -
> -	rc = ata_host_start(host);
> -	if (rc)
> -		return rc;
> -
> -	for (i = 0; i < host->n_ports; i++) {
> -		struct ahci_port_priv *pp = host->ports[i]->private_data;
> -
> -		/* Do not receive interrupts sent by dummy ports */
> -		if (!pp) {
> -			disable_irq(irq + i);
> -			continue;
> -		}
> -
> -		rc = devm_request_threaded_irq(host->dev, irq + i,
> -					       ahci_hw_interrupt,
> -					       ahci_thread_fn, IRQF_SHARED,
> -					       pp->irq_desc, host->ports[i]);
> -		if (rc)
> -			goto out_free_irqs;
> -	}
> -
> -	for (i = 0; i < host->n_ports; i++)
> -		ata_port_desc(host->ports[i], "irq %d", irq + i);
> -
> -	rc = ata_host_register(host, &ahci_sht);
> -	if (rc)
> -		goto out_free_all_irqs;
> -
> -	return 0;
> -
> -out_free_all_irqs:
> -	i = host->n_ports;
> -out_free_irqs:
> -	for (i--; i >= 0; i--)
> -		devm_free_irq(host->dev, irq + i, host->ports[i]);
> -
> -	return rc;
> -}

It's generally a bad idea to mix code movement w/ other changes.  I'm
applying this one but please separate code movements to separate
patches from now on.

Thanks.
diff mbox

Patch

diff --git a/drivers/ata/acard-ahci.c b/drivers/ata/acard-ahci.c
index 25d0ac3..c962886 100644
--- a/drivers/ata/acard-ahci.c
+++ b/drivers/ata/acard-ahci.c
@@ -498,8 +498,7 @@  static int acard_ahci_init_one(struct pci_dev *pdev, const struct pci_device_id
 	acard_ahci_pci_print_info(host);
 
 	pci_set_master(pdev);
-	return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
-				 &acard_ahci_sht);
+	return ahci_host_activate(host, pdev->irq, &acard_ahci_sht);
 }
 
 module_pci_driver(acard_ahci_pci_driver);
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index f68a995..d0ac38b 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1226,66 +1226,6 @@  intx:
 	return 0;
 }
 
-/**
- *	ahci_host_activate - start AHCI host, request IRQs and register it
- *	@host: target ATA host
- *	@irq: base IRQ number to request
- *	@irq_handler: irq_handler used when requesting IRQs
- *	@irq_flags: irq_flags used when requesting IRQs
- *
- *	Similar to ata_host_activate, but requests IRQs according to AHCI-1.1
- *	when multiple MSIs were allocated. That is one MSI per port, starting
- *	from @irq.
- *
- *	LOCKING:
- *	Inherited from calling layer (may sleep).
- *
- *	RETURNS:
- *	0 on success, -errno otherwise.
- */
-int ahci_host_activate(struct ata_host *host, int irq)
-{
-	int i, rc;
-
-	rc = ata_host_start(host);
-	if (rc)
-		return rc;
-
-	for (i = 0; i < host->n_ports; i++) {
-		struct ahci_port_priv *pp = host->ports[i]->private_data;
-
-		/* Do not receive interrupts sent by dummy ports */
-		if (!pp) {
-			disable_irq(irq + i);
-			continue;
-		}
-
-		rc = devm_request_threaded_irq(host->dev, irq + i,
-					       ahci_hw_interrupt,
-					       ahci_thread_fn, IRQF_SHARED,
-					       pp->irq_desc, host->ports[i]);
-		if (rc)
-			goto out_free_irqs;
-	}
-
-	for (i = 0; i < host->n_ports; i++)
-		ata_port_desc(host->ports[i], "irq %d", irq + i);
-
-	rc = ata_host_register(host, &ahci_sht);
-	if (rc)
-		goto out_free_all_irqs;
-
-	return 0;
-
-out_free_all_irqs:
-	i = host->n_ports;
-out_free_irqs:
-	for (i--; i >= 0; i--)
-		devm_free_irq(host->dev, irq + i, host->ports[i]);
-
-	return rc;
-}
-
 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	unsigned int board_id = ent->driver_data;
@@ -1487,11 +1427,7 @@  static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	pci_set_master(pdev);
 
-	if (hpriv->flags & AHCI_HFLAG_MULTI_MSI)
-		return ahci_host_activate(host, pdev->irq);
-
-	return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
-				 &ahci_sht);
+	return ahci_host_activate(host, pdev->irq, &ahci_sht);
 }
 
 module_pci_driver(ahci_pci_driver);
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index a074c73..6a22055 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -388,11 +388,9 @@  int ahci_port_resume(struct ata_port *ap);
 void ahci_set_em_messages(struct ahci_host_priv *hpriv,
 			  struct ata_port_info *pi);
 int ahci_reset_em(struct ata_host *host);
-irqreturn_t ahci_interrupt(int irq, void *dev_instance);
-irqreturn_t ahci_hw_interrupt(int irq, void *dev_instance);
-irqreturn_t ahci_thread_fn(int irq, void *dev_instance);
 void ahci_print_info(struct ata_host *host, const char *scc_s);
-int ahci_host_activate(struct ata_host *host, int irq);
+int ahci_host_activate(struct ata_host *host, int irq,
+		       struct scsi_host_template *sht);
 void ahci_error_handler(struct ata_port *ap);
 
 static inline void __iomem *__ahci_port_base(struct ata_host *host,
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index b784e9d..0080551 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1789,7 +1789,7 @@  static void ahci_port_intr(struct ata_port *ap)
 	ahci_handle_port_interrupt(ap, port_mmio, status);
 }
 
-irqreturn_t ahci_thread_fn(int irq, void *dev_instance)
+static irqreturn_t ahci_thread_fn(int irq, void *dev_instance)
 {
 	struct ata_port *ap = dev_instance;
 	struct ahci_port_priv *pp = ap->private_data;
@@ -1809,7 +1809,6 @@  irqreturn_t ahci_thread_fn(int irq, void *dev_instance)
 
 	return IRQ_HANDLED;
 }
-EXPORT_SYMBOL_GPL(ahci_thread_fn);
 
 static void ahci_hw_port_interrupt(struct ata_port *ap)
 {
@@ -1823,7 +1822,7 @@  static void ahci_hw_port_interrupt(struct ata_port *ap)
 	pp->intr_status |= status;
 }
 
-irqreturn_t ahci_hw_interrupt(int irq, void *dev_instance)
+static irqreturn_t ahci_hw_interrupt(int irq, void *dev_instance)
 {
 	struct ata_port *ap_this = dev_instance;
 	struct ahci_port_priv *pp = ap_this->private_data;
@@ -1877,9 +1876,8 @@  irqreturn_t ahci_hw_interrupt(int irq, void *dev_instance)
 
 	return IRQ_WAKE_THREAD;
 }
-EXPORT_SYMBOL_GPL(ahci_hw_interrupt);
 
-irqreturn_t ahci_interrupt(int irq, void *dev_instance)
+static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
 {
 	struct ata_host *host = dev_instance;
 	struct ahci_host_priv *hpriv;
@@ -1938,7 +1936,6 @@  irqreturn_t ahci_interrupt(int irq, void *dev_instance)
 
 	return IRQ_RETVAL(handled);
 }
-EXPORT_SYMBOL_GPL(ahci_interrupt);
 
 unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
 {
@@ -2472,6 +2469,81 @@  void ahci_set_em_messages(struct ahci_host_priv *hpriv,
 }
 EXPORT_SYMBOL_GPL(ahci_set_em_messages);
 
+static int ahci_host_activate_multi_irqs(struct ata_host *host, int irq,
+					 struct scsi_host_template *sht)
+{
+	int i, rc;
+
+	rc = ata_host_start(host);
+	if (rc)
+		return rc;
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ahci_port_priv *pp = host->ports[i]->private_data;
+
+		/* Do not receive interrupts sent by dummy ports */
+		if (!pp) {
+			disable_irq(irq + i);
+			continue;
+		}
+
+		rc = devm_request_threaded_irq(host->dev, irq + i,
+					       ahci_hw_interrupt,
+					       ahci_thread_fn, IRQF_SHARED,
+					       pp->irq_desc, host->ports[i]);
+		if (rc)
+			goto out_free_irqs;
+	}
+
+	for (i = 0; i < host->n_ports; i++)
+		ata_port_desc(host->ports[i], "irq %d", irq + i);
+
+	rc = ata_host_register(host, sht);
+	if (rc)
+		goto out_free_all_irqs;
+
+	return 0;
+
+out_free_all_irqs:
+	i = host->n_ports;
+out_free_irqs:
+	for (i--; i >= 0; i--)
+		devm_free_irq(host->dev, irq + i, host->ports[i]);
+
+	return rc;
+}
+
+/**
+ *	ahci_host_activate - start AHCI host, request IRQs and register it
+ *	@host: target ATA host
+ *	@irq: base IRQ number to request
+ *	@sht: scsi_host_template to use when registering the host
+ *
+ *	Similar to ata_host_activate, but requests IRQs according to AHCI-1.1
+ *	when multiple MSIs were allocated. That is one MSI per port, starting
+ *	from @irq.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ahci_host_activate(struct ata_host *host, int irq,
+		       struct scsi_host_template *sht)
+{
+	struct ahci_host_priv *hpriv = host->private_data;
+	int rc;
+
+	if (hpriv->flags & AHCI_HFLAG_MULTI_MSI)
+		rc = ahci_host_activate_multi_irqs(host, irq, sht);
+	else
+		rc = ata_host_activate(host, irq, ahci_interrupt,
+				       IRQF_SHARED, sht);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ahci_host_activate);
+
 MODULE_AUTHOR("Jeff Garzik");
 MODULE_DESCRIPTION("Common AHCI SATA low-level routines");
 MODULE_LICENSE("GPL");
diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index c7f787e..0b03f90 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -493,8 +493,7 @@  int ahci_platform_init_host(struct platform_device *pdev,
 	ahci_init_controller(host);
 	ahci_print_info(host, "platform");
 
-	return ata_host_activate(host, irq, ahci_interrupt, IRQF_SHARED,
-				 &ahci_platform_sht);
+	return ahci_host_activate(host, irq, &ahci_platform_sht);
 }
 EXPORT_SYMBOL_GPL(ahci_platform_init_host);