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From: "Marcin Obara" <marcin_obara@users.sourceforge.net>
To: Valdis.Kletnieks@vt.edu
Cc: "Andrew Morton" <akpm@linux-foundation.org>,
	"Linus Torvalds" <torvalds@linux-foundation.org>,
	linux-kernel@vger.kernel.org,
	"Marcel Selhorst" <tpm@selhorst.net>,
	"Kylene Jo Hall" <kjhall@us.ibm.com>,
	tpmdd-devel@lists.sourceforge.net
Subject: Re: [PATCH] 2.6.26-mmotm tpm-correct-tpm-timeouts-to-jiffies-conversion-d820-fix.patch
Date: Sat, 26 Jul 2008 20:27:33 +0100	[thread overview]
Message-ID: <ea8d860a0807261227w66e29978uecd12cf1fcb915d1@mail.gmail.com> (raw)
In-Reply-To: <15114.1217045033@turing-police.cc.vt.edu>

2008/7/26  <Valdis.Kletnieks@vt.edu>:
> +       if (chip->vendor.duration[TPM_SHORT] == 1)
> +               chip->vendor.duration[TPM_SHORT] *= 1000;
> +
>        chip->vendor.duration[TPM_MEDIUM] =
>            usecs_to_jiffies(be32_to_cpu
>                             (*((__be32 *) (data +


Value in  chip->vendor.duration[TPM_SHORT]  is in jiffies not in  milliseconds.
 (As I know it's not the same. Jiffy is in range 1-10 ms.)
I know the result may be the same, but it is unclear.

Maybe... value should be compared (to 1000) before conversion?
or...
If after conversion, there should be something like this:
       if (chip->vendor.duration[TPM_SHORT]  < (HZ/100))  /*  less
than 10ms ? */
               chip->vendor.duration[TPM_SHORT] = HZ;

What do you think?

Regards
Marcin

  reply	other threads:[~2008-07-26 19:27 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20080725164614.044a526e.akpm@linux-foundation.org>
     [not found] ` <50684.1217035060@turing-police.cc.vt.edu>
     [not found]   ` <20080725185115.5d1a107d.akpm@linux-foundation.org>
2008-07-26  4:03     ` Valdis.Kletnieks
2008-07-26 19:27       ` Marcin Obara [this message]
2008-08-11 20:44         ` Andrew Morton
2008-08-15  9:39         ` Valdis.Kletnieks

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