linux-kernel - Re: [RFC PATCH v6] tpm_tis: verify interrupt during init

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Message-ID: <20140908220238.GB6204@obsidianresearch.com>
Date:	Mon, 8 Sep 2014 16:02:38 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Scot Doyle <lkml14@...tdoyle.com>
Cc:	Peter Huewe <peterhuewe@....de>, Ashley Lai <ashley@...leylai.com>,
	Marcel Selhorst <tpmdd@...horst.net>,
	Stefan Berger <stefanb@...ux.vnet.ibm.com>,
	Luigi Semenzato <semenzato@...gle.com>,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v6] tpm_tis: verify interrupt during init

On Tue, Sep 02, 2014 at 08:22:58PM +0000, Scot Doyle wrote:

> It's spending that time (now 3 seconds) in tpm_tis_send_data.

Due to request_locality?

> > Looks really good to me, I can try and test the next version here this
> > week.
> 
> Thanks!

So, I forgot my TIS systems have no IRQ, can't really test it
properly, but it compiles and doesn't muck up the no irq specified
case at least.

> +		if (test_irq) {

Should be 

if (test_irq && !priv->irq_tested)

We don't need to msleep if we got an irq already.

Reviewed-By: Jason Gunthorpe <jgunthorpe@...idianresearch.com>

You should post a final version and try and get it tested on a normal
x86 system.

Jason
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