linux-kernel - Re: [PATCH 02/11] soc/fsl: Introduce DPAA BMan device management driver

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Date:	Fri, 10 Jul 2015 16:12:12 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Pledge Roy-R01356 <roy.pledge@...escale.com>
CC:	Paul Bolle <pebolle@...cali.nl>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/11] soc/fsl: Introduce DPAA BMan device management
 driver

On Fri, 2015-07-10 at 15:57 -0500, Pledge Roy-R01356 wrote:
> > 
> > On Fri, 2015-07-10 at 13:36 +0200, Paul Bolle wrote:
> > > On do, 2015-07-09 at 16:21 -0400, Roy Pledge wrote:
> > > > +#ifdef CONFIG_FSL_DPA_CHECKING
> > > > +#define DPA_ASSERT(x) \
> > > > +   do { \
> > > > +           if (!(x)) { \
> > > > +                   pr_crit("ASSERT: (%s:%d) %s\n", __FILE__, 
> > > > __LINE__, \
> > > > +                           __stringify_1(x)); \
> > > > +                   dump_stack(); \
> > > > +                   panic("assertion failure"); \
> > > 
> > > Not my call, but why panic() here?
> > 
> > I'm pretty sure I've complained about this before (as well as all the
> > BUG_ONs).
> > 
> Is the concern here just the call to panic()?  I'm happy to change what 
> happens when an issue is detected but the DPA_ASSERT() calls are very 
> useful when testing changes to the driver and when bringing up the drivers 
> on new silicon variants. 

Use WARN_ON() or a variant thereof.

-Scott

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