Jiang Liu wrote on 22/09/15 17:00:
Previously the eata driver just grabs and accesses eata PCI devices
without implementing a PCI device driver, that causes troubles with
latest IRQ related
Commit 991de2e59090 ("PCI, x86: Implement pcibios_alloc_irq() and
pcibios_free_irq()") changes the way to allocate PCI legacy IRQ
for PCI devices on x86 platforms. Instead of allocating PCI legacy
IRQs when pcibios_enable_device() gets called, now pcibios_alloc_irq()
will be called by pci_device_probe() to allocate PCI legacy IRQs
when binding PCI drivers to PCI devices.
But the eata driver directly accesses PCI devices without implementing
corresponding PCI drivers, so pcibios_alloc_irq() won't be called for
those PCI devices and wrong IRQ number may be used to manage the PCI
device.
This patch implements a PCI device driver to manage eata PCI devices,
so eata driver could properly cooperate with the PCI core. It also
provides headroom for PCI hotplug with eata driver.
It also represents non-PCI eata devices as platform devices, so it could
be managed as normal devices.
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxx>
Cc: Ballabio, Dario <dario.ballabio@xxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
---
Not really any change with this driver:
previously
http://www.users.on.net/~arthur.marsh/20150915547.jpg
now
http://www.users.on.net/~arthur.marsh/20150922553.jpg
If there was any way of capturing any more debug output I'd be happy to
do it.
Arthur.
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