From: Jingoo Han <jg1.han@samsung.com>
To: "'Dmitry Torokhov'" <dmitry.torokhov@gmail.com>
Cc: "'Samuel Ortiz'" <sameo@linux.intel.com>,
linux-kernel@vger.kernel.org,
"'Jingoo Han'" <jg1.han@samsung.com>
Subject: RE: [PATCH 07/11] mfd: menelaus: use devm_request_irq() and devm_kzalloc()
Date: Wed, 20 Feb 2013 17:05:10 +0900 [thread overview]
Message-ID: <000801ce0f41$00e79170$02b6b450$%han@samsung.com> (raw)
In-Reply-To: <20130220073044.GB2648@core.coreip.homeip.net>
On Wednesday, February 20, 2013 4:31 PM, Dmitry Torokhov wrote:
>
> Hi Jongoo,
>
> On Wed, Feb 20, 2013 at 03:12:38PM +0900, Jingoo Han wrote:
> > Use devm_request_irq() and devm_kzalloc() to make cleanup paths
> > more simple.
> >
>
> ...
>
> > @@ -1269,9 +1266,7 @@ static int __exit menelaus_remove(struct i2c_client *client)
> > {
> > struct menelaus_chip *menelaus = i2c_get_clientdata(client);
> >
> > - free_irq(client->irq, menelaus);
> > flush_work(&menelaus->work);
> > - kfree(menelaus);
> > the_menelaus = NULL;
> > return 0;
>
> This conversion is certainly wrong - you really want to disable IRQ and
> then wait for the scheduled work to finish before freeing memory. Here
> you flush work but nothing stops IRQ from firing and scheduling that
> work again.
Yes, you're right.
I will use devm_free_irq() before flush_work().
>
> Please, be *extra* careful with devm_request_irq() conversions.
>
> Thanks.
>
> --
> Dmitry
next prev parent reply other threads:[~2013-02-20 8:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-20 6:09 [PATCH 01/11] mfd: 88pm860x: drop devm_kfree of devm_kzalloc'd data Jingoo Han
2013-02-20 6:10 ` [PATCH 02/11] mfd: lm3533: use devm_gpio_request_one() Jingoo Han
2013-02-20 6:10 ` [PATCH 03/11] mfd: aat2870: use devm_gpio_request_one() and devm_kzalloc() Jingoo Han
2013-02-20 6:11 ` [PATCH 04/11] mfd: intel_msic: use devm_gpio_request_one() Jingoo Han
2013-02-20 6:11 ` [PATCH 05/11] mfd: twl6040: use devm_gpio_request_one() and devm_request_threaded_irq() Jingoo Han
2013-02-20 7:37 ` Dmitry Torokhov
2013-02-20 8:09 ` Jingoo Han
2013-02-20 6:12 ` [PATCH 06/11] mfd: omap-usb-host: use devm_gpio_request_one() Jingoo Han
2013-02-20 6:12 ` [PATCH 07/11] mfd: menelaus: use devm_request_irq() and devm_kzalloc() Jingoo Han
2013-02-20 7:30 ` Dmitry Torokhov
2013-02-20 8:05 ` Jingoo Han [this message]
2013-02-20 8:10 ` Dmitry Torokhov
2013-02-20 8:17 ` Jingoo Han
2013-02-20 8:36 ` Dmitry Torokhov
2013-02-20 6:13 ` [PATCH 08/11] mfd: ezx-pcap: " Jingoo Han
2013-02-20 7:33 ` Dmitry Torokhov
2013-02-20 8:06 ` Jingoo Han
2013-02-20 6:13 ` [PATCH 09/11] mfd: da903x: " Jingoo Han
2013-02-20 6:14 ` [PATCH 10/11] mfd: tps65010: " Jingoo Han
2013-02-20 7:35 ` Dmitry Torokhov
2013-02-20 8:07 ` Jingoo Han
2013-02-20 6:14 ` [PATCH 11/11] mfd: tc3589x: " Jingoo Han
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