linux-kernel - Re: [PATCH] serial: 8250_lpss: Release Quark MSI vectors on exit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <daaa7a86-9987-911b-24ee-21d5107f0d7a@siemens.com>
Date:   Wed, 4 Jan 2017 23:46:58 +0100
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Christoph Hellwig <hch@....de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] serial: 8250_lpss: Release Quark MSI vectors on exit

On 2017-01-04 23:19, Andy Shevchenko wrote:
> On Wed, Jan 4, 2017 at 9:36 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
>> No one seems to do this magically in the background, so we have to do
>> the job in the exit handler that corresponds to the board setup handler.
>>
>> Fixes: 60a9244a5d14 ("serial: 8250_lpss: enable MSI for Intel Quark")
>> Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
> 
> NAK, check the PCI devres code, please.
> 
> Christoph, can you amend documentation to make this clear?
> 
> I NAKed already third patch related to PCI managed resources (couple
> of those regarding to pci_irq_* API)/
> 

Ah, there are resources that are managed without being allocated
explicitly that way. Hmm, not very intuitive. Are MSI / MSI-X vectors
the only such cases?

Thanks,
Jan

-- 
Siemens AG, Corporate Technology, CT RDA ITP SES-DE
Corporate Competence Center Embedded Linux