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Message-ID: <5615DE90.4090203@linux.intel.com> Date: Thu, 8 Oct 2015 11:10:08 +0800 From: Jiang Liu <jiang.liu@...ux.intel.com> To: James Bottomley <James.Bottomley@...senPartnership.com>, Thomas Gleixner <tglx@...utronix.de>, Bjorn Helgaas <bhelgaas@...gle.com>, Arthur Marsh <arthur.marsh@...ernode.on.net>, Hannes Reinecke <hare@...e.de>, Dario <dario.ballabio@....com>, Christoph Hellwig <hch@...radead.org> Cc: linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, linux-scsi@...r.kernel.org, x86@...nel.org Subject: Re: [Bugfix v4 1/2] eata: Convert eata driver as normal PCI and platform device drivers On 2015/10/8 10:51, Jiang Liu wrote: > 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. > Hi all, Sorry, should add: Reported-and-tested-by: Arthur Marsh <arthur.marsh@...ernode.on.net> > Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com> > Cc: Hannes Reinecke <hare@...e.de> > Cc: Ballabio, Dario <dario.ballabio@....com> > Cc: Christoph Hellwig <hch@...radead.org> > --- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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