linux-kernel - Re: [PATCH] mfd: qcom-spmi-pmic: Add support for more chips versions

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Date:	Tue, 04 Nov 2014 17:49:55 +0200
From:	"Ivan T. Ivanov" <iivanov@...sol.com>
To:	Stanimir Varbanov <svarbanov@...sol.com>
Cc:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] mfd: qcom-spmi-pmic: Add support for more chips versions


On Tue, 2014-11-04 at 17:26 +0200, Stanimir Varbanov wrote:
> On 11/04/2014 05:22 PM, Ivan T. Ivanov wrote:
> > On Tue, 2014-11-04 at 17:06 +0200, Stanimir Varbanov wrote:

<snip>

> > > > +       snprintf(compatible, ARRAY_SIZE(compatible), "qcom,%s-v%d.%d",
> > > > +       name, major, minor);
> > > > +       prop = kzalloc(sizeof(*prop), GFP_KERNEL);
> > > > +       if (prop) {
> > > > +       prop->name = kstrdup("compatible", GFP_KERNEL);
> > > > +       prop->value = kstrdup(compatible, GFP_KERNEL);
> > > > +       prop->length = strlen(prop->value);
> > > > +       of_update_property(root, prop);
> > > 
> > > of_update_property can fail, check the returned value.
> > 
> > Same thing as above, but probably allocated memory at least can be freed.
> 
> might be better idea to use devm_kzalloc and devm_kstrdup?
> 

compatible property is attached to device not to driver, so
memory should be there even after driver is unloaded, I think.

Regards,
Ivan
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