From: Grant Likely <grant.likely@secretlab.ca>
To: Viresh Kumar <viresh.kumar@linaro.org>,
Thierry Reding <thierry.reding@avionic-design.de>
Cc: linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Arnd Bergmann <arnd@arndb.de>,
Wolfram Sang <w.sang@pengutronix.de>,
Linus Walleij <linus.walleij@linaro.org>
Subject: Re: [PATCH 08/33] gpio: Convert to devm_ioremap_resource()
Date: Sat, 09 Feb 2013 13:52:02 +0000 [thread overview]
Message-ID: <20130209135202.C8EA73E30EC@localhost> (raw)
In-Reply-To: <CAOh2x=ne_Oe7V=BzjQJtuPv20syorLTq-C89aKQDo4JK78Y8YA@mail.gmail.com>
On Mon, 21 Jan 2013 16:22:21 +0530, Viresh Kumar <viresh.kumar@linaro.org> wrote:
> On Mon, Jan 21, 2013 at 3:39 PM, Thierry Reding
> <thierry.reding@avionic-design.de> wrote:
> > diff --git a/drivers/gpio/gpio-spear-spics.c b/drivers/gpio/gpio-spear-spics.c
> > index 5f45fc4..7a4bf7c 100644
> > --- a/drivers/gpio/gpio-spear-spics.c
> > +++ b/drivers/gpio/gpio-spear-spics.c
> > @@ -140,11 +140,9 @@ static int spics_gpio_probe(struct platform_device *pdev)
> > return -ENOMEM;
> > }
> >
> > - spics->base = devm_request_and_ioremap(&pdev->dev, res);
> > - if (!spics->base) {
> > - dev_err(&pdev->dev, "request and ioremap fail\n");
>
> can we keep it as is?
And this is why I dislike the ERR_PTR pattern so much. It goes against
every instinct about what is and is not a valid pointer.
I know people want error codes, but I think hoping that all users will
remember to do 'if (IS_ERR(ptr))' instead of 'if (!ptr)' makes things
worse not better.
g.
next prev parent reply other threads:[~2013-02-09 13:52 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-21 10:08 [PATCH 00/33] Sanitize devm_request_and_ioremap() Thierry Reding
2013-01-21 10:08 ` [PATCH 01/33] lib: devres: Introduce devm_ioremap_resource() Thierry Reding
2013-01-21 10:26 ` Dmitry Torokhov
2013-01-22 17:40 ` Greg Kroah-Hartman
2013-01-22 21:00 ` Thierry Reding
2013-01-21 10:08 ` [PATCH 02/33] ARM: Convert to devm_ioremap_resource() Thierry Reding
2013-01-21 15:58 ` Russell King - ARM Linux
2013-01-21 16:05 ` Thierry Reding
2013-01-21 16:16 ` Russell King - ARM Linux
2013-01-21 17:23 ` Arnd Bergmann
2013-01-22 17:37 ` Greg Kroah-Hartman
2013-01-21 10:08 ` [PATCH 03/33] MIPS: " Thierry Reding
2013-01-21 10:08 ` [PATCH 04/33] amba: " Thierry Reding
2013-01-21 10:08 ` [PATCH 05/33] ata: " Thierry Reding
2013-01-21 10:08 ` [PATCH 06/33] char: " Thierry Reding
2013-01-21 10:09 ` [PATCH 07/33] dma: " Thierry Reding
2013-01-28 16:00 ` Vinod Koul
2013-01-28 17:20 ` Thierry Reding
2013-01-29 13:11 ` Andy Shevchenko
2013-01-29 13:21 ` Greg Kroah-Hartman
2013-01-21 10:09 ` [PATCH 08/33] gpio: " Thierry Reding
2013-01-21 10:52 ` Viresh Kumar
2013-02-09 13:52 ` Grant Likely [this message]
2013-02-11 13:53 ` Linus Walleij
2013-02-11 15:07 ` Russell King - ARM Linux
2013-01-22 10:15 ` Linus Walleij
2013-01-22 10:25 ` Thierry Reding
2013-01-22 16:08 ` Greg Kroah-Hartman
2013-01-22 16:15 ` Thierry Reding
2013-01-23 8:36 ` Linus Walleij
2013-01-22 11:39 ` Gregory CLEMENT
2013-01-22 11:49 ` Thierry Reding
2013-01-21 10:09 ` [PATCH 09/33] drm: " Thierry Reding
2013-01-21 10:09 ` [PATCH 10/33] i2c: " Thierry Reding
2013-01-22 22:30 ` Wolfram Sang
2013-01-21 10:09 ` [PATCH 11/33] iio: " Thierry Reding
2013-01-22 12:12 ` Jonathan Cameron
2013-01-21 10:09 ` [PATCH 12/33] Input: " Thierry Reding
2013-01-21 10:27 ` Dmitry Torokhov
2013-01-21 10:45 ` Viresh Kumar
2013-01-21 10:49 ` Thierry Reding
2013-01-21 10:57 ` Viresh Kumar
2013-01-21 11:00 ` Thierry Reding
2013-01-21 10:09 ` [PATCH 13/33] iommu: " Thierry Reding
2013-01-21 10:09 ` [PATCH 14/33] media: " Thierry Reding
2013-01-22 11:04 ` Sylwester Nawrocki
2013-01-21 10:09 ` [PATCH 15/33] memory: " Thierry Reding
2013-01-21 10:09 ` [PATCH 16/33] mfd: " Thierry Reding
2013-02-03 17:22 ` Samuel Ortiz
2013-02-03 22:32 ` Samuel Ortiz
2013-01-21 10:09 ` [PATCH 17/33] misc: " Thierry Reding
2013-01-21 10:09 ` [PATCH 18/33] mmc: " Thierry Reding
2013-01-21 10:09 ` [PATCH 19/33] mtd: " Thierry Reding
2013-01-21 10:09 ` [PATCH 20/33] net: " Thierry Reding
2013-01-21 20:29 ` David Miller
2013-01-22 6:56 ` Thierry Reding
2013-01-22 13:03 ` Arnd Bergmann
2013-01-22 13:09 ` Thierry Reding
2013-01-22 13:17 ` Arnd Bergmann
2013-01-22 19:08 ` David Miller
2013-01-22 18:58 ` David Miller
2013-01-21 10:09 ` [PATCH 21/33] pinctrl: " Thierry Reding
2013-01-21 10:50 ` Viresh Kumar
2013-01-21 10:09 ` [PATCH 22/33] power: " Thierry Reding
2013-01-21 10:09 ` [PATCH 23/33] pwm: " Thierry Reding
2013-01-21 10:49 ` Viresh Kumar
2013-01-21 10:09 ` [PATCH 24/33] rtc: " Thierry Reding
2013-01-21 10:50 ` Viresh Kumar
2013-01-21 10:09 ` [PATCH 25/33] spi: " Thierry Reding
2013-02-05 14:20 ` Grant Likely
2013-01-21 10:09 ` [PATCH 26/33] staging: " Thierry Reding
2013-01-21 10:09 ` [PATCH 27/33] thermal: " Thierry Reding
2013-01-21 10:09 ` [PATCH 28/33] serial: " Thierry Reding
2013-01-21 10:09 ` [PATCH 29/33] usb: " Thierry Reding
2013-01-21 17:16 ` Alan Stern
2013-01-21 18:50 ` Felipe Balbi
2013-01-21 10:09 ` [PATCH 30/33] video: " Thierry Reding
2013-01-22 4:17 ` Jingoo Han
2013-01-21 10:09 ` [PATCH 31/33] w1: " Thierry Reding
2013-01-21 10:27 ` Evgeniy Polyakov
2013-01-21 10:09 ` [PATCH 32/33] watchdog: " Thierry Reding
2013-01-21 10:09 ` [PATCH 33/33] ASoC: " Thierry Reding
2013-01-22 7:48 ` Mark Brown
2013-01-22 7:55 ` Thierry Reding
2013-01-22 8:01 ` Mark Brown
2013-02-09 13:58 ` [PATCH 00/33] Sanitize devm_request_and_ioremap() Grant Likely
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