linux-kernel - Re: [PATCH v1] OLPC: use %*ph specifier instead of passing direct values

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Date:	Wed, 30 Sep 2015 17:59:44 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Paul Fox <pgf@...top.org>, Darren Hart <dvhart@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Andres Salomon <dilinger@...ued.net>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v1] OLPC: use %*ph specifier instead of passing direct
 values

On Mon, 2014-12-29 at 09:32 -0500, Paul Fox wrote:
> change looks okay to me.
>  Acked-by: Paul Fox <pgf@...top.org>
> 

Darren, maybe you can apply this one? Seems OLPC is x86-based.

> paul
> 
> andy wrote:
>  > The %*ph specifier allows to dump small buffers in hex format. 
> Let's use it
>  > instead of passing direct values via stack.
>  > 
>  > Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
>  > ---
>  >  drivers/platform/olpc/olpc-ec.c | 13 +++++--------
>  >  1 file changed, 5 insertions(+), 8 deletions(-)
>  > 
>  > diff --git a/drivers/platform/olpc/olpc-ec.c 
> b/drivers/platform/olpc/olpc-ec.c
>  > index f911952..f99b183 100644
>  > --- a/drivers/platform/olpc/olpc-ec.c
>  > +++ b/drivers/platform/olpc/olpc-ec.c
>  > @@ -192,18 +192,15 @@ static ssize_t ec_dbgfs_cmd_write(struct 
> file *file, const char __user *buf,
>  >  	for (i = 0; i <= ec_cmd_bytes; i++)
>  >  		ec_cmd[i] = ec_cmd_int[i];
>  >  
>  > -	pr_debug("olpc-ec: debugfs cmd 0x%02x with %d args %02x %02x 
> %02x %02x %02x, want %d returns\n",
>  > -			ec_cmd[0], ec_cmd_bytes, ec_cmd[1], 
> ec_cmd[2],
>  > -			ec_cmd[3], ec_cmd[4], ec_cmd[5], 
> ec_dbgfs_resp_bytes);
>  > +	pr_debug("olpc-ec: debugfs cmd 0x%02x with %d args %5ph, 
> want %d returns\n",
>  > +			ec_cmd[0], ec_cmd_bytes, ec_cmd + 1,
>  > +			ec_dbgfs_resp_bytes);
>  >  
>  >  	olpc_ec_cmd(ec_cmd[0], (ec_cmd_bytes == 0) ? NULL : 
> &ec_cmd[1],
>  >  			ec_cmd_bytes, ec_dbgfs_resp, 
> ec_dbgfs_resp_bytes);
>  >  
>  > -	pr_debug("olpc-ec: response %02x %02x %02x %02x %02x %02x 
> %02x %02x (%d bytes expected)\n",
>  > -			ec_dbgfs_resp[0], ec_dbgfs_resp[1], 
> ec_dbgfs_resp[2],
>  > -			ec_dbgfs_resp[3], ec_dbgfs_resp[4], 
> ec_dbgfs_resp[5],
>  > -			ec_dbgfs_resp[6], ec_dbgfs_resp[7],
>  > -			ec_dbgfs_resp_bytes);
>  > +	pr_debug("olpc-ec: response %8ph (%d bytes expected)\n",
>  > +			ec_dbgfs_resp, ec_dbgfs_resp_bytes);
>  >  
>  >  out:
>  >  	mutex_unlock(&ec_dbgfs_lock);
>  > -- 
>  > 2.1.3
> 
> =---------------------
>  paul fox, pgf@...top.org

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy
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