From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/3] drivers:input:ps2 Added sunxi A20 ps2 driver, changed makefile and Kconfig
Date: Fri, 05 Dec 2014 16:50:18 +0100 [thread overview]
Message-ID: <2906898.Fr1ixVkiAI@wuerfel> (raw)
In-Reply-To: <63D786FF-B293-4FC1-AD71-D99515DE8E3D@gmail.com>
On Friday 05 December 2014 07:01:17 Dmitry Torokhov wrote:
>
> On December 5, 2014 2:33:11 AM PST, Arnd Bergmann <arnd@arndb.de> wrote:
> >On Thursday 04 December 2014 04:23:44 vishnupatekar wrote:
> >> +
> >> +struct sunxips2data {
> >> + int irq;
> >> + spinlock_t ps2_lock;
> >> + void __iomem *base_address; /* virt address of control registers*/
> >> + struct serio *serio; /* serio*/
> >> + struct device *dev;
> >> + struct clk *pclk;
> >> +};
> >
> >As this is dynamically allocated, better embed the serio member
> >directly to avoid allocating both separately.
>
> That would be wrong - serio is refcounted and it may outlive instance of sunxips2data you embedded it into.
Ok, I see. I guess in this case the use of devm_kzalloc for serio is a bug,
because that would lead to a double free upon module unload, right?
Arnd
next prev parent reply other threads:[~2014-12-05 15:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-03 22:53 [PATCH 2/3] drivers:input:ps2 Added sunxi A20 ps2 driver, changed makefile and Kconfig vishnupatekar
2014-12-03 23:23 ` Dmitry Torokhov
2014-12-05 10:01 ` Maxime Ripard
2014-12-05 10:33 ` Arnd Bergmann
2014-12-05 15:01 ` Dmitry Torokhov
2014-12-05 15:50 ` Arnd Bergmann [this message]
2014-12-05 15:53 ` Dmitry Torokhov
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