linux-kernel - Re: [PATCH] iommu: amd: hide unused iommu_table

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Date:   Fri, 13 Apr 2018 17:03:10 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Arnd Bergmann <arnd@...db.de>, Joerg Roedel <joro@...tes.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>, Baoquan He <bhe@...hat.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Gary R Hook <gary.hook@....com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu: amd: hide unused iommu_table_lock

On 2018-04-04 12:56:59 [+0200], Arnd Bergmann wrote:
> The newly introduced lock is only used when CONFIG_IRQ_REMAP is enabled:
> 
> drivers/iommu/amd_iommu.c:86:24: error: 'iommu_table_lock' defined but not used [-Werror=unused-variable]
>  static DEFINE_SPINLOCK(iommu_table_lock);
> 
> This moves the definition next to the user, within the #ifdef protected
> section of the file.
> 
> Fixes: ea6166f4b83e ("iommu/amd: Split irq_lookup_table out of the amd_iommu_devtable_lock")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
Acked-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Thank you Arnd.

Sebastian