lkml.org 
[lkml]   [2015]   [Sep]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFT v3] eata: Convert eata driver as normal PCI and platform device drivers


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@linux.intel.com>
> Cc: Hannes Reinecke <hare@suse.de>
> Cc: Ballabio, Dario <dario.ballabio@emc.com>
> Cc: Christoph Hellwig <hch@infradead.org>
> ---

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.


\
 
 \ /
  Last update: 2015-09-23 01:01    [W:0.089 / U:3.288 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site