linux-kernel - Re: [PATCH 1/5] HDQ Driver for OMAP2430/3430

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Message-Id: <20081013085323.f8bd7efb.akpm@linux-foundation.org>
Date:	Mon, 13 Oct 2008 08:53:23 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Madhusudhan Chikkature" <madhu.cr@...com>
Cc:	gadiyar@...com, johnpol@....mipt.ru, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org
Subject: Re: [PATCH 1/5] HDQ Driver for OMAP2430/3430

> On Mon, 13 Oct 2008 18:55:43 +0530 "Madhusudhan Chikkature" <madhu.cr@...com> wrote:
> 
> ----- Original Message ----- 
> From: "Andrew Morton" <akpm@...ux-foundation.org>
> To: "Gadiyar, Anand" <gadiyar@...com>
> Cc: <johnpol@....mipt.ru>; <linux-kernel@...r.kernel.org>; <linux-omap@...r.kernel.org>; <madhu.cr@...com>
> Sent: Saturday, October 11, 2008 2:08 AM
> Subject: Re: [PATCH 1/5] HDQ Driver for OMAP2430/3430
> 
> 
> >> +       /* set the GO bit */
> >> +       hdq_reg_merge(hdq_data, OMAP_HDQ_CTRL_STATUS, OMAP_HDQ_CTRL_STATUS_GO,
> >> +               OMAP_HDQ_CTRL_STATUS_DIR | OMAP_HDQ_CTRL_STATUS_GO);
> >> +       /* wait for the TXCOMPLETE bit */
> >> +       ret = wait_event_interruptible_timeout(hdq_wait_queue,
> >> +               hdq_data->hdq_irqstatus, OMAP_HDQ_TIMEOUT);
> >> +       if (ret < 0) {
> >> +               dev_dbg(hdq_data->dev, "wait interrupted");
> >> +               return -EINTR;
> >> +       }
> > 
> > Is this desirable?  The user hits ^C and the driver bails out?
> > 
> > I assume so, but was this tested?
> 
> Andrew, What is the test scenario you mean here? A user hitting ^C when the driver is waiting for the TXCOMPLETE bit?

Yes.


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