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From: Baoquan He <bhe@redhat.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>,
	Alexander Gordeev <agordeev@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	akpm@linux-foundation.org, hch@infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 01/11] mm/ioremap: change the return value of io[re|un]map_allowed
Date: Sun, 7 Aug 2022 09:51:41 +0800	[thread overview]
Message-ID: <20220807015141.GB416711@MiWiFi-R3L-srv> (raw)
In-Reply-To: <832b38ca-064e-0ab8-cd62-337d0d83d471@huawei.com>

On 08/06/22 at 10:29am, Kefeng Wang wrote:
...snip...
> > > diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
> > > index 72974cb81343..d72eb310fb3c 100644
> > > --- a/include/asm-generic/io.h
> > > +++ b/include/asm-generic/io.h
> > > @@ -967,26 +967,27 @@ static inline void iounmap(volatile void __iomem *addr)
> > >   /*
> > >    * Arch code can implement the following two hooks when using GENERIC_IOREMAP
> > >    * ioremap_allowed() return a bool,
> > > - *   - true means continue to remap
> > > - *   - false means skip remap and return directly
> > > + *   - IS_ERR means return an error
> > > + *   - NULL means continue to remap
> > > + *   - a non-NULL, non-IS_ERR pointer is returned directly
> > If ioremap_allowed() returns a valid pointer, then the function name
> > is not as precise anymore.
> 
> Maybe use arch_ioremap/unmap as before, or some better name.

Looks good to me. Or ioremap_check() which is a generic name, and
usually xxx_check() can hanlde many things.


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WARNING: multiple messages have this Message-ID (diff)
From: Baoquan He <bhe@redhat.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>,
	Alexander Gordeev <agordeev@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	akpm@linux-foundation.org, hch@infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 01/11] mm/ioremap: change the return value of io[re|un]map_allowed
Date: Sun, 7 Aug 2022 09:51:41 +0800	[thread overview]
Message-ID: <20220807015141.GB416711@MiWiFi-R3L-srv> (raw)
In-Reply-To: <832b38ca-064e-0ab8-cd62-337d0d83d471@huawei.com>

On 08/06/22 at 10:29am, Kefeng Wang wrote:
...snip...
> > > diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
> > > index 72974cb81343..d72eb310fb3c 100644
> > > --- a/include/asm-generic/io.h
> > > +++ b/include/asm-generic/io.h
> > > @@ -967,26 +967,27 @@ static inline void iounmap(volatile void __iomem *addr)
> > >   /*
> > >    * Arch code can implement the following two hooks when using GENERIC_IOREMAP
> > >    * ioremap_allowed() return a bool,
> > > - *   - true means continue to remap
> > > - *   - false means skip remap and return directly
> > > + *   - IS_ERR means return an error
> > > + *   - NULL means continue to remap
> > > + *   - a non-NULL, non-IS_ERR pointer is returned directly
> > If ioremap_allowed() returns a valid pointer, then the function name
> > is not as precise anymore.
> 
> Maybe use arch_ioremap/unmap as before, or some better name.

Looks good to me. Or ioremap_check() which is a generic name, and
usually xxx_check() can hanlde many things.



  parent reply	other threads:[~2022-08-07  1:53 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-01 14:40 [PATCH 00/11] mm: ioremap: Convert architectures to take GENERIC_IOREMAP way Baoquan He
2022-08-01 14:40 ` Baoquan He
2022-08-01 14:40 ` [PATCH 01/11] mm/ioremap: change the return value of io[re|un]map_allowed Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-04 15:42   ` Alexander Gordeev
2022-08-04 15:42     ` Alexander Gordeev
2022-08-06  2:29     ` Kefeng Wang
2022-08-06  2:29       ` Kefeng Wang
2022-08-06  8:29       ` Alexander Gordeev
2022-08-06  8:29         ` Alexander Gordeev
2022-08-07  1:42         ` Baoquan He
2022-08-07  1:42           ` Baoquan He
2022-08-07  1:51       ` Baoquan He [this message]
2022-08-07  1:51         ` Baoquan He
2022-08-07  1:58     ` Baoquan He
2022-08-07  1:58       ` Baoquan He
2022-08-01 14:40 ` [PATCH 02/11] mm: ioremap: fixup the physical address Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-04 16:02   ` Alexander Gordeev
2022-08-04 16:02     ` Alexander Gordeev
2022-08-07  2:11     ` Baoquan He
2022-08-07  2:11       ` Baoquan He
2022-08-20  0:49     ` Baoquan He
2022-08-20  0:49       ` Baoquan He
2022-08-01 14:40 ` [PATCH 03/11] mm: ioremap: allow ARCH to have its own ioremap definition Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 04/11] arc: mm: Convert to GENERIC_IOREMAP Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 05/11] hexagon: " Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 06/11] ia64: " Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 07/11] openrisc: " Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 08/11] parisc: " Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 09/11] s390: " Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 10/11] sh: " Baoquan He
2022-08-01 14:40   ` Baoquan He
2022-08-01 14:40 ` [PATCH 11/11] xtensa: " Baoquan He
2022-08-01 14:40   ` Baoquan He

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