From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org>,
catalin.marinas@arm.com, will.deacon@arm.com,
bhelgaas@google.com, Liviu.Dudau@arm.com, tglx@linutronix.de,
mingo@redhat.com, hpa@zytor.com, rjw@rjwysocki.net,
linaro-acpi@lists.linaro.org, linux-pci@vger.kernel.org,
x86@kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: Re: [RFC PATCH 2/4] x86, acpi, pci: Isolate new PCI mmconfig entry insertion.
Date: Fri, 07 Nov 2014 15:09:10 +0100 [thread overview]
Message-ID: <1927317.6tJuq4S5Om@wuerfel> (raw)
In-Reply-To: <1415366876-30811-3-git-send-email-tomasz.nowicki@linaro.org>
On Friday 07 November 2014 14:27:54 Tomasz Nowicki wrote:
> Add special pci_mmcfg_insert_lock mutex since pci_mmcfg_lock was moved
> to common file. No functional changes.
>
> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
>
What is the new lock protecting against? You no longer have a mutual
exclusion with the other code, which looks like it is a functional
change, and also incorrect.
It also sounds like the code was broken after the first patch and
you need this one to make it compile again. You can't do that, and
instead need to change the locking rules first.
Arnd
next prev parent reply other threads:[~2014-11-07 14:09 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-07 13:27 [RFC PATCH 0/4] MMCFG refactoring + PCI ACPI probing for ARM64 Tomasz Nowicki
2014-11-07 13:27 ` [RFC PATCH 1/4] x86, acpi, pci: Move arch-agnostic MMCFG code out of arch/x86/ directory Tomasz Nowicki
2014-11-07 13:27 ` [RFC PATCH 2/4] x86, acpi, pci: Isolate new PCI mmconfig entry insertion Tomasz Nowicki
2014-11-07 14:09 ` Arnd Bergmann [this message]
2014-11-07 14:43 ` Tomasz Nowicki
2014-11-07 13:27 ` [RFC PATCH 3/4] arm64, acpi, pci: Add arch specific functions for mmconfig driver Tomasz Nowicki
2014-11-07 14:12 ` [Linaro-acpi] " Arnd Bergmann
2014-11-07 14:39 ` Tomasz Nowicki
2014-11-07 14:54 ` Arnd Bergmann
2014-11-07 13:27 ` [RFC PATCH 4/4] arm64, acpi, pci: Provide arch-specific calls for PCI host bridge dirver (PNP0A03) Tomasz Nowicki
2014-11-07 14:24 ` Arnd Bergmann
2014-11-14 14:10 ` Tomasz Nowicki
2014-11-14 14:53 ` [Linaro-acpi] " Arnd Bergmann
2014-11-18 10:17 ` Tomasz Nowicki
2014-11-18 10:35 ` Arnd Bergmann
2014-11-07 14:55 ` Liviu Dudau
2014-11-12 8:47 ` Tomasz Nowicki
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