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Date: Sun, 21 Sep 2014 15:19:25 +0200
From: Alexander Gordeev <agordeev@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Alexander Gordeev <agordeev@...hat.com>, linux-ide@...r.kernel.org
Subject: [PATCH RESEND v3 2/6] AHCI: Move host activation code into ahci_host_activate()
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@...hat.com>
Cc: linux-ide@...r.kernel.org
---
drivers/ata/acard-ahci.c | 3 +--
drivers/ata/ahci.c | 59 +++++++++++++++++++++++++-----------------
drivers/ata/ahci.h | 3 ++-
drivers/ata/libahci_platform.c | 3 +--
4 files changed, 39 insertions(+), 29 deletions(-)
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 7a86b32..7ce8e01 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1236,24 +1236,8 @@ 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)
+static int ahci_host_activate_multi_irqs(struct ata_host *host, int irq,
+ struct scsi_host_template *sht)
{
int i, rc;
@@ -1281,7 +1265,7 @@ int ahci_host_activate(struct ata_host *host, int irq)
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);
+ rc = ata_host_register(host, sht);
if (rc)
goto out_free_all_irqs;
@@ -1296,6 +1280,37 @@ out_free_irqs:
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);
+
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
unsigned int board_id = ent->driver_data;
@@ -1509,11 +1524,7 @@ 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 a2a31af..1a9955c 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -392,7 +392,8 @@ 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_platform.c b/drivers/ata/libahci_platform.c
index 5b92c29..a085224 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -495,8 +495,7 @@ 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);
--
1.8.3.1
--
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