From: Thierry Reding <thierry.reding@avionic-design.de>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-arch@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Grant Likely <grant.likely@secretlab.ca>,
Alexandre Courbot <acourbot@nvidia.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"devicetree-discuss@lists.ozlabs.org"
<devicetree-discuss@lists.ozlabs.org>,
Guenter Roeck <linux@roeck-us.net>
Subject: Re: [PATCH 1/4] gpiolib: introduce descriptor-based GPIO interface
Date: Thu, 10 Jan 2013 09:36:47 +0100 [thread overview]
Message-ID: <20130110083647.GA26256@avionic-0098.adnet.avionic-design.de> (raw)
In-Reply-To: <20130109111055.GG3931@n2100.arm.linux.org.uk>
[-- Attachment #1: Type: text/plain, Size: 962 bytes --]
On Wed, Jan 09, 2013 at 11:10:55AM +0000, Russell King - ARM Linux wrote:
[...]
> err = gpio_request(en_vdd_1v05, "EN_VDD_1V05");
> if (err) {
> pr_err("%s: gpio_request failed: %d\n", __func__, err);
> return err;
> }
>
> gpio_direction_output(en_vdd_1v05, 1);
>
> regulator = regulator_get(NULL, "vdd_ldo0,vddio_pex_clk");
> if (IS_ERR_OR_NULL(regulator)) {
> pr_err("%s: regulator_get failed: %d\n", __func__,
> (int)PTR_ERR(regulator));
> goto err_reg;
> }
> ...
> err_reg:
> gpio_free(en_vdd_1v05);
>
> return err;
> }
>
> So 'err' here is never set. when IS_ERR_OR_NULL evaluates true.
> Setting 'err' to PTR_ERR(regulator) is not correct because a NULL return
> sets 'err' to zero.
FWIW, this one is fixed in the Tegra PCIe series I posted yesterday.
Thierry
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: thierry.reding@avionic-design.de (Thierry Reding)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/4] gpiolib: introduce descriptor-based GPIO interface
Date: Thu, 10 Jan 2013 09:36:47 +0100 [thread overview]
Message-ID: <20130110083647.GA26256@avionic-0098.adnet.avionic-design.de> (raw)
In-Reply-To: <20130109111055.GG3931@n2100.arm.linux.org.uk>
On Wed, Jan 09, 2013 at 11:10:55AM +0000, Russell King - ARM Linux wrote:
[...]
> err = gpio_request(en_vdd_1v05, "EN_VDD_1V05");
> if (err) {
> pr_err("%s: gpio_request failed: %d\n", __func__, err);
> return err;
> }
>
> gpio_direction_output(en_vdd_1v05, 1);
>
> regulator = regulator_get(NULL, "vdd_ldo0,vddio_pex_clk");
> if (IS_ERR_OR_NULL(regulator)) {
> pr_err("%s: regulator_get failed: %d\n", __func__,
> (int)PTR_ERR(regulator));
> goto err_reg;
> }
> ...
> err_reg:
> gpio_free(en_vdd_1v05);
>
> return err;
> }
>
> So 'err' here is never set. when IS_ERR_OR_NULL evaluates true.
> Setting 'err' to PTR_ERR(regulator) is not correct because a NULL return
> sets 'err' to zero.
FWIW, this one is fixed in the Tegra PCIe series I posted yesterday.
Thierry
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 836 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20130110/a9b222d3/attachment.sig>
next prev parent reply other threads:[~2013-01-10 8:36 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-08 7:18 [PATCH 0/4] gpio: introduce descriptor-based interface Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 7:18 ` [PATCH 1/4] gpiolib: introduce descriptor-based GPIO interface Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 12:59 ` Arnd Bergmann
2013-01-08 12:59 ` Arnd Bergmann
2013-01-09 1:06 ` Alexandre Courbot
2013-01-09 1:06 ` Alexandre Courbot
2013-01-09 10:25 ` Russell King - ARM Linux
2013-01-09 10:25 ` Russell King - ARM Linux
2013-01-09 10:35 ` Arnd Bergmann
2013-01-09 10:35 ` Arnd Bergmann
2013-01-09 10:44 ` Russell King - ARM Linux
2013-01-09 10:44 ` Russell King - ARM Linux
2013-01-09 11:10 ` Russell King - ARM Linux
2013-01-09 11:10 ` Russell King - ARM Linux
[not found] ` <20130109111055.GG3931-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2013-01-09 11:52 ` Arnd Bergmann
2013-01-09 11:52 ` Arnd Bergmann
2013-01-09 11:52 ` Arnd Bergmann
2013-01-09 14:44 ` Nicolas Pitre
2013-01-09 14:44 ` Nicolas Pitre
2013-01-09 15:04 ` [PATCH] Proposed removal of IS_ERR_OR_NULL() (was: Re: [PATCH 1/4] gpiolib: introduce descriptor-based GPIO interface) Russell King - ARM Linux
2013-01-09 15:04 ` Russell King - ARM Linux
[not found] ` <20130109150427.GL3931-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2013-01-09 15:21 ` Grant Likely
2013-01-09 15:21 ` Grant Likely
2013-01-09 15:21 ` Grant Likely
2013-01-09 15:26 ` Arnd Bergmann
2013-01-09 15:26 ` Arnd Bergmann
2013-01-09 15:27 ` Nicolas Pitre
2013-01-09 15:27 ` Nicolas Pitre
2013-01-09 15:51 ` Russell King - ARM Linux
2013-01-09 15:51 ` Russell King - ARM Linux
2013-01-09 16:09 ` Nicolas Pitre
2013-01-09 16:09 ` Nicolas Pitre
2013-01-09 16:21 ` Russell King - ARM Linux
2013-01-09 16:21 ` Russell King - ARM Linux
2013-01-09 17:12 ` Russell King - ARM Linux
2013-01-09 17:12 ` Russell King - ARM Linux
2013-01-09 17:52 ` Tony Lindgren
2013-01-09 17:52 ` Tony Lindgren
2013-01-17 10:28 ` Linus Walleij
2013-01-17 10:28 ` Linus Walleij
2013-01-10 8:36 ` Thierry Reding [this message]
2013-01-10 8:36 ` [PATCH 1/4] gpiolib: introduce descriptor-based GPIO interface Thierry Reding
2013-01-08 7:18 ` [PATCH 2/4] gpiolib: add gpiod_get and gpiod_put functions Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 13:07 ` Arnd Bergmann
2013-01-08 13:07 ` Arnd Bergmann
2013-01-09 1:49 ` Alexandre Courbot
2013-01-09 1:49 ` Alexandre Courbot
2013-01-08 7:18 ` [PATCH 3/4] gpiolib: of: convert OF helpers to descriptor API Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 7:18 ` [PATCH 4/4] gpiolib: add documentation for new gpiod_ API Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 7:18 ` Alexandre Courbot
2013-01-08 13:06 ` [PATCH 0/4] gpio: introduce descriptor-based interface Arnd Bergmann
2013-01-08 13:06 ` Arnd Bergmann
2013-01-09 1:48 ` Alexandre Courbot
2013-01-09 1:48 ` Alexandre Courbot
2013-01-09 10:46 ` Arnd Bergmann
2013-01-09 10:46 ` Arnd Bergmann
2013-01-10 4:07 ` Alex Courbot
2013-01-10 4:07 ` Alex Courbot
2013-01-10 10:08 ` Arnd Bergmann
2013-01-10 10:08 ` Arnd Bergmann
2013-01-14 10:21 ` Alex Courbot
2013-01-14 10:21 ` Alex Courbot
2013-01-14 10:21 ` Alex Courbot
2013-01-14 10:46 ` Arnd Bergmann
2013-01-14 10:46 ` Arnd Bergmann
2013-01-14 10:46 ` Arnd Bergmann
2013-01-14 10:21 ` Alex Courbot
2013-01-17 11:15 ` Linus Walleij
2013-01-17 11:15 ` Linus Walleij
2013-01-17 12:02 ` Greg Ungerer
2013-01-17 12:02 ` Greg Ungerer
2013-01-17 16:50 ` Steven King
2013-01-17 16:50 ` Steven King
2013-01-17 16:50 ` Steven King
2013-01-17 19:22 ` Arnd Bergmann
2013-01-17 19:22 ` Arnd Bergmann
2013-01-20 6:07 ` Alex Courbot
2013-01-20 6:07 ` Alex Courbot
2013-01-20 6:07 ` Alex Courbot
2013-01-22 8:55 ` Linus Walleij
2013-01-22 8:55 ` Linus Walleij
2013-01-17 11:25 ` Linus Walleij
2013-01-17 11:25 ` Linus Walleij
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130110083647.GA26256@avionic-0098.adnet.avionic-design.de \
--to=thierry.reding@avionic-design.de \
--cc=acourbot@nvidia.com \
--cc=arnd@arndb.de \
--cc=devicetree-discuss@lists.ozlabs.org \
--cc=grant.likely@secretlab.ca \
--cc=linus.walleij@linaro.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=linux@roeck-us.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.