netdev - Re: [PATCH v4 5/5] net: wan: fsl_qmc

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Message-ID: <20240229151508.42432f9c@bootlin.com>
Date: Thu, 29 Feb 2024 15:15:08 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Vadim Fedorenko <vadim.fedorenko@...ux.dev>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Yury Norov
 <yury.norov@...il.com>, Rasmus Villemoes <linux@...musvillemoes.dk>,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 linuxppc-dev@...ts.ozlabs.org, Andrew Lunn <andrew@...n.ch>, Mark Brown
 <broonie@...nel.org>, Christophe Leroy <christophe.leroy@...roup.eu>,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v4 5/5] net: wan: fsl_qmc_hdlc: Add framer support

On Thu, 29 Feb 2024 15:58:06 +0200
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> On Thu, Feb 29, 2024 at 01:56:05PM +0100, Herve Codina wrote:
> > On Thu, 22 Feb 2024 17:49:40 +0200
> > Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:  
> > > On Thu, Feb 22, 2024 at 03:22:18PM +0100, Herve Codina wrote:  
> 
> ...
> 
> > I've got an issue with guard(spinlock_irqsave).  
> 
> No, you got an issue with sparse.
> 
> > I have the following warning (make C=1):
> > drivers/net/wan/fsl_qmc_hdlc.c:49:12: warning: context imbalance in 'qmc_hdlc_framer_set_carrier' - wrong count at exit
> > 
> > I also tried to call guard(spinlock_irqsave) before 'if (!qmc_hdlc->framer)'
> > but it does not change anything.
> > 
> > Did I miss something in the guard(spinlock_irqsave) usage ?  
> 
> You may ignore that for now. Not your problem, no problem in the code.
> 
> https://lore.kernel.org/linux-sparse/8d596a06-9f25-4d9f-8282-deb2d03a6b0a@moroto.mountain/
> 

Perfect, thanks.

Hervé