tree 0a7320b2bfebf9e567175c1e4b86bd95f81d7238
parent a1c823117894ed79943a87b1c718139cc1be1b6a
author Robert Richter <rrichter@cavium.com> 1433073318 +0200
committer Tejun Heo <tj@kernel.org> 1433309869 -0400

ahci: Store irq number in struct ahci_host_priv

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>