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ahci: Store irq number in struct ahci_host_priv

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Currently, ahci supports only msi and intx. To also support msix the
handling of the irq number need to be changed. The irq number for msix
devices is taken from msi_list instead of pci_dev. Thus, the irq
number of a device needs to be stored in struct ahci_host_priv now.
This allows the host controller to be activated in a generic way.

This change is only intended for ahci drivers. For that reason the irq
number is stored in struct ahci_host_priv used only by ahci drivers.
Thus, the ABI changes only for ahci_host_activate(), but existing ata
drivers (about 50) are unaffected and keep unchanged. All users of
ahci_host_activate() have been updated.

While touching drivers/ata/libahci.c, doing a small code cleanup in
ahci_port_start().

Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Robert Richter
2015-05-31 13:55:18 +02:00
committed by Tejun Heo
parent a1c8231178
commit 21bfd1aa95
6 changed files with 27 additions and 19 deletions
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4
drivers/ata/libahci_platform.c
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@@ -518,6 +518,8 @@ int ahci_platform_init_host(struct platform_device *pdev,
return -EINVAL;
}
hpriv->irq = irq;
/* prepare host */
pi.private_data = (void *)(unsigned long)hpriv->flags;
@@ -588,7 +590,7 @@ int ahci_platform_init_host(struct platform_device *pdev,
ahci_init_controller(host);
ahci_print_info(host, "platform");
return ahci_host_activate(host, irq, sht);
return ahci_host_activate(host, sht);
}
EXPORT_SYMBOL_GPL(ahci_platform_init_host);