----- Original Message -----
From: "Daniel Mack" <daniel@xxxxxxxx>
To: "Hemanth V" <hemanthv@xxxxxx>
Cc: <linux-kernel@xxxxxxxxxxxxxxx>; <linux-omap@xxxxxxxxxxxxxxx>;
<linux-input@xxxxxxxxxxxxxxx>
Sent: Friday, May 21, 2010 6:16 PM
Subject: Re: [RFC] [PATCH] misc : ROHM BH1780GLI Ambient light sensor Driver
On Fri, May 21, 2010 at 06:10:00PM +0530, Hemanth V wrote:
>On Fri, May 21, 2010 at 05:05:50PM +0530, Hemanth V wrote:
>>+ mutex_lock(&ddata->lock);
>>+
>>+ error = bh1780_write(ddata, BH1780_REG_CONTROL, val, "CONTROL");
>>+ if (error < 0) {
>>+ mutex_unlock(&ddata->lock);
>>+ return error;
>>+ }
>>+
>>+ msleep(BH1780_PON_DELAY);
>
>Hmm, what do you wait for here?
Settling time delay required before lux read out
I thought so, but in fact you're just delaying the next two lines by
that:
>>+ ddata->power_state = val;
>>+ mutex_unlock(&ddata->lock);
... which doesn't make sense to me.
I can believe there is need to wait for the value to settle, but I think
it's the wrong place where you're doing it currently.
I could move it one line down, but not really release the mutex.
Which other place would you suggest.
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