linux-kernel - Re: Regression with 0b9e2988ab22 ("ahci: use pci_alloc_irq

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Date:   Fri, 21 Oct 2016 17:05:06 +0300
From:   Jarkko Nikula <jarkko.nikula@...ux.intel.com>
To:     Christoph Hellwig <hch@....de>
Cc:     linux-ide@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Regression with 0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors")

On 10/21/2016 04:27 PM, Christoph Hellwig wrote:
> Hi Jarkko,
>
> please try the two fixes queue up in the libata tree for this:
>
> https://git.kernel.org/cgit/linux/kernel/git/tj/libata.git/log/?h=for-4.9-fixes
>
Great! Commit 17a51f12cfbd ("ahci: only try to use multi-MSI mode if 
there is more than 1 port") fixed the non-working SATA on a machine with 
single port and it continues using MSI.

Another machine with more ports still uses IO-APIC (was using MSI before 
0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors")). Then I applied 
a478b097474c ("ahci: fix nvec check") but didn't see changes.

-- 
Jarkko