linux-kernel - Re: [PATCH 2/4] mfd: cpcap: Use handle

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170403141454.GG10760@atomide.com>
Date:   Mon, 3 Apr 2017 07:14:55 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org,
        Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>,
        Marcel Partap <mpartap@....net>,
        Michael Scott <michael.scott@...aro.org>
Subject: Re: [PATCH 2/4] mfd: cpcap: Use handle_reread flag for interrupts

Hi,

* Lee Jones <lee.jones@...aro.org> [170403 03:23]:
> On Wed, 22 Mar 2017, Tony Lindgren wrote:
> 
> > On CPCAP we need to keep reading interrupts until there are no
> > more interrupts. Otherwise the PMIC interrupt to the SoC will at
> > some point stop toggling. This seems to happen because new CPCAP
> > device interrupts show up while we're handling.
> > 
> > Cc: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
> > Cc: Lee Jones <lee.jones@...aro.org>
> > Cc: Marcel Partap <mpartap@....net>
> > Cc: Michael Scott <michael.scott@...aro.org>
> > Tested-by: Sebastian Reichel <sre@...nel.org>
> > Signed-off-by: Tony Lindgren <tony@...mide.com>
> > ---
> >  drivers/mfd/motorola-cpcap.c | 3 +++
> >  1 file changed, 3 insertions(+)
> 
> Applied, thanks.

Sorry this one depends on patch 1/4 for .handle_reread. So this
one should be reverted or dropped. That will cause trivial merge
conflicts with patches 2 and 4.

Please let me know if you want me to resend just patches 2 and 4
as patches 1 and 2 need more work.

Regards,

Tony

> > diff --git a/drivers/mfd/motorola-cpcap.c b/drivers/mfd/motorola-cpcap.c
> > --- a/drivers/mfd/motorola-cpcap.c
> > +++ b/drivers/mfd/motorola-cpcap.c
> > @@ -71,6 +71,7 @@ static struct regmap_irq_chip cpcap_irq_chip[CPCAP_NR_IRQ_CHIPS] = {
> >  		.ack_base = CPCAP_REG_MI1,
> >  		.mask_base = CPCAP_REG_MIM1,
> >  		.use_ack = true,
> > +		.handle_reread = true,
> >  	},
> >  	{
> >  		.name = "cpcap-m2",
> > @@ -79,6 +80,7 @@ static struct regmap_irq_chip cpcap_irq_chip[CPCAP_NR_IRQ_CHIPS] = {
> >  		.ack_base = CPCAP_REG_MI2,
> >  		.mask_base = CPCAP_REG_MIM2,
> >  		.use_ack = true,
> > +		.handle_reread = true,
> >  	},
> >  	{
> >  		.name = "cpcap1-4",
> > @@ -88,6 +90,7 @@ static struct regmap_irq_chip cpcap_irq_chip[CPCAP_NR_IRQ_CHIPS] = {
> >  		.mask_base = CPCAP_REG_INTM1,
> >  		.type_base = CPCAP_REG_INTS1,
> >  		.use_ack = true,
> > +		.handle_reread = true,
> >  	},
> >  };
> >  
> 
> -- 
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
> Follow Linaro: Facebook | Twitter | Blog