linux-kernel - Re: [PATCH v2] staging: comedi: s626: use comedi

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Date:	Thu, 3 Apr 2014 11:38:04 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Chase Southwood <chase.southwood@...oo.com>
Cc:	gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
	abbotti@....co.uk, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] staging: comedi: s626: use comedi_timeout() on
 remaining loops

On Tue, Mar 25, 2014 at 10:43:58PM -0500, Chase Southwood wrote:
> There were just a handful of more while loops in this file that needed
> timeouts, and this patch takes care of them.  One new callback is
> introduced, and all of the proper comedi_timeout() calls are then used.
> 
> Signed-off-by: Chase Southwood <chase.southwood@...oo.com>
> ---
> 2: s626_i2c_handshake_eoc() can be used in s626_initialize() as noted by
> Ian.  So, s626_initialize_eoc() has been removed, and its uses swapped
> for s626_i2c_handshake_eoc().
> 
>  drivers/staging/comedi/drivers/s626.c | 34 ++++++++++++++++++++++++++--------
>  1 file changed, 26 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c
> index 95fadf3..865cf93 100644
> --- a/drivers/staging/comedi/drivers/s626.c
> +++ b/drivers/staging/comedi/drivers/s626.c
> @@ -295,10 +295,24 @@ static void s626_debi_replace(struct comedi_device *dev, unsigned int addr,
>  
>  /* **************  EEPROM ACCESS FUNCTIONS  ************** */
>  
> +static int s626_i2c_handshake_eoc(struct comedi_device *dev,
> +				 struct comedi_subdevice *s,
> +				 struct comedi_insn *insn,
> +				 unsigned long context)
> +{
> +	unsigned int status;

This should probably be bool.

> +
> +	status = s626_mc_test(dev, S626_MC2_UPLD_IIC, S626_P_MC2);
> +	if (status)
> +		return 0;
> +	return -EBUSY;
> +}
> +
>  static uint32_t s626_i2c_handshake(struct comedi_device *dev, uint32_t val)
>  {
>  	struct s626_private *devpriv = dev->private;
>  	unsigned int ctrl;
> +	uint32_t ret;

This should be int.  I get really suspicious when people start using
uint32_t types.  Why does it have to be 32 bits?  Unsigned is wrong as
well.

regards,
dan carpenter

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