linux-kernel - Re: [PATCH] x86, iommu: Fix header comments regarding standard and

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Message-ID: <20150409075408.GB25453@pd.tnic>
Date:	Thu, 9 Apr 2015 09:54:08 +0200
From:	Borislav Petkov <bp@...e.de>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	mingo@...hat.com, tglx@...utronix.de, hpa@...or.com,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	konrad.wilk@...cle.com
Subject: Re: [PATCH] x86, iommu: Fix header comments regarding standard and
 _FINISH macros

On Thu, Apr 09, 2015 at 09:37:44AM +0200, Ingo Molnar wrote:
> So while we are touching it, how about making it more readable:
> 
>     *
>     * The standard vs the _FINISH variants differ in that the
>     * standard variant will continue detecting other IOMMUs in the 
>     * call list after the detection routine returns a positive number. 
>     * The _FINISH variant will stop the execution chain. Both variants 
>     * will still call the 'init' and ...
>     *

I went a step further :-)

---
From: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>
Date: Wed, 8 Apr 2015 10:46:57 -0500
Subject: [PATCH] x86/iommu: Fix header comments regarding standard and _FINISH
 macros

The comment line regarding IOMMU_INIT and IOMMU_INIT_FINISH macros
is incorrect:

"The standard vs the _FINISH differs in that the _FINISH variant will
continue detecting other IOMMUs in the call list..."

It should be "..the *standard* variant will continue detecting..."

Fix that. Also, make it readable while at it.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>
Fixes: 6e9636693373 ("x86, iommu: Update header comments with appropriate naming")
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: x86-ml <x86@...nel.org>
Cc: konrad.wilk@...cle.com
Link: http://lkml.kernel.org/r/1428508017-5316-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Signed-off-by: 
---
 arch/x86/include/asm/iommu_table.h | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/iommu_table.h b/arch/x86/include/asm/iommu_table.h
index f42a04735a0a..e37d6b3ad983 100644
--- a/arch/x86/include/asm/iommu_table.h
+++ b/arch/x86/include/asm/iommu_table.h
@@ -79,11 +79,12 @@ struct iommu_table_entry {
  *  d). Similar to the 'init', except that this gets called from pci_iommu_init
  *      where we do have a memory allocator.
  *
- * The standard vs the _FINISH differs in that the _FINISH variant will
- * continue detecting other IOMMUs in the call list after the
- * the detection routine returns a positive number. The _FINISH will
- * stop the execution chain. Both will still call the 'init' and
- * 'late_init' functions if they are set.
+ * The standard IOMMU_INIT differs from the IOMMU_INIT_FINISH variant
+ * in that the former will continue detecting other IOMMUs in the call
+ * list after the detection routine returns a positive number, while the
+ * latter will stop the execution chain upon first successful detection.
+ * Both variants will still call the 'init' and 'late_init' functions if
+ * they are set.
  */
 #define IOMMU_INIT_FINISH(_detect, _depend, _init, _late_init)		\
 	__IOMMU_INIT(_detect, _depend, _init, _late_init, 1)
-- 
2.3.3

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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