linux-kernel - RE: [PATCH] iommu/exynos: remove dead code (set

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Date:	Tue, 06 Aug 2013 18:47:43 +0900
From:	Cho KyongHo <pullip.cho@...sung.com>
To:	'Grant Grundler' <grundler@...omium.org>,
	'Linux IOMMU' <iommu@...ts.linux-foundation.org>
Cc:	'Joerg Roedel' <joro@...tes.org>,
	'Sachin Kamat' <sachin.kamat@...aro.org>,
	'Jiri Kosina' <jkosina@...e.cz>,
	'Wei Yongjun' <yongjun_wei@...ndmicro.com.cn>,
	'Kukjin Kim' <kgene.kim@...sung.com>,
	'LKML' <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] iommu/exynos: remove dead code (set_prefbuf)

> -----Original Message-----
> From: grundler@...gle.com [mailto:grundler@...gle.com] On Behalf Of Grant Grundler
> Sent: Tuesday, August 06, 2013 1:40 AM
> 
> Ping?
> 
> Adding linux-iommu ML.
> 
> thanks,
> grant
> 
> On Tue, Jul 2, 2013 at 9:08 AM, Grant Grundler <grundler@...omium.org> wrote:
> > exynos_sysmmu_set_prefbuf() is not called any where.
> >
> > Signed-off-by: Grant Grundler <grundler@...omium.org>

Reviewed-by: Cho KyongHo <pullip.cho@...sung.com>

Thank you.

KyongHo.
> > ---
> >  drivers/iommu/exynos-iommu.c | 44 --------------------------------------------
> >  1 file changed, 44 deletions(-)
> >
> > diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
> > index 3f32d64..0740189 100644
> > --- a/drivers/iommu/exynos-iommu.c
> > +++ b/drivers/iommu/exynos-iommu.c
> > @@ -247,50 +247,6 @@ static void __sysmmu_set_prefbuf(void __iomem *sfrbase, unsigned long base,
> >         __raw_writel(size - 1 + base,  sfrbase + REG_PB0_EADDR + idx * 8);
> >  }
> >
> > -void exynos_sysmmu_set_prefbuf(struct device *dev,
> > -                               unsigned long base0, unsigned long size0,
> > -                               unsigned long base1, unsigned long size1)
> > -{
> > -       struct sysmmu_drvdata *data = dev_get_drvdata(dev->archdata.iommu);
> > -       unsigned long flags;
> > -       int i;
> > -
> > -       BUG_ON((base0 + size0) <= base0);
> > -       BUG_ON((size1 > 0) && ((base1 + size1) <= base1));
> > -
> > -       read_lock_irqsave(&data->lock, flags);
> > -       if (!is_sysmmu_active(data))
> > -               goto finish;
> > -
> > -       for (i = 0; i < data->nsfrs; i++) {
> > -               if ((readl(data->sfrbases[i] + REG_MMU_VERSION) >> 28) == 3) {
> > -                       if (!sysmmu_block(data->sfrbases[i]))
> > -                               continue;
> > -
> > -                       if (size1 == 0) {
> > -                               if (size0 <= SZ_128K) {
> > -                                       base1 = base0;
> > -                                       size1 = size0;
> > -                               } else {
> > -                                       size1 = size0 -
> > -                                               ALIGN(size0 / 2, SZ_64K);
> > -                                       size0 = size0 - size1;
> > -                                       base1 = base0 + size0;
> > -                               }
> > -                       }
> > -
> > -                       __sysmmu_set_prefbuf(
> > -                                       data->sfrbases[i], base0, size0, 0);
> > -                       __sysmmu_set_prefbuf(
> > -                                       data->sfrbases[i], base1, size1, 1);
> > -
> > -                       sysmmu_unblock(data->sfrbases[i]);
> > -               }
> > -       }
> > -finish:
> > -       read_unlock_irqrestore(&data->lock, flags);
> > -}
> > -
> >  static void __set_fault_handler(struct sysmmu_drvdata *data,
> >                                         sysmmu_fault_handler_t handler)
> >  {
> > --
> > 1.8.3
> >

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