From: Deepak <deepak_das@mentor.com>
To: linus.walleij@linaro.org
Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
vzapolsk <Vladimir_Zapolskiy@mentor.com>
Subject: [PATCH] driver: base: pinctrl: return error from pinctrl_bind_pins()
Date: Tue, 13 Sep 2016 12:43:04 +0530 [thread overview]
Message-ID: <57D7A700.8080402@mentor.com> (raw)
strict pin controller returns -EINVAL in case of pin request which
is already claimed by somebody else.
Following is the sequence of calling pin_request() from
pinctrl_bind_pins():-
pinctrl_bind_pins()->pinctrl_select_state()->pinmux_enable_setting()->
pin_request()
But pinctrl_bind_pins() only returns -EPROBE_DEFER which makes device
driver probe successful even if the pin request is rejected by the pin
controller subsystem.
This commit modifies pinctrl_bind_pins() to return error if the pin is
rejected by pin control subsystem.
Signed-off-by: Deepak Das <deepak_das@mentor.com>
---
drivers/base/pinctrl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/pinctrl.c b/drivers/base/pinctrl.c
index 0762975..e65c1af 100644
--- a/drivers/base/pinctrl.c
+++ b/drivers/base/pinctrl.c
@@ -92,7 +92,7 @@ cleanup_alloc:
dev->pins = NULL;
/* Only return deferrals */
- if (ret != -EPROBE_DEFER)
+ if ((ret != -EPROBE_DEFER) && (ret != -EINVAL))
ret = 0;
return ret;
--
1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Deepak <deepak_das@mentor.com>
To: <linus.walleij@linaro.org>
Cc: <linux-kernel@vger.kernel.org>, <linux-gpio@vger.kernel.org>,
vzapolsk <Vladimir_Zapolskiy@mentor.com>
Subject: [PATCH] driver: base: pinctrl: return error from pinctrl_bind_pins()
Date: Tue, 13 Sep 2016 12:43:04 +0530 [thread overview]
Message-ID: <57D7A700.8080402@mentor.com> (raw)
strict pin controller returns -EINVAL in case of pin request which
is already claimed by somebody else.
Following is the sequence of calling pin_request() from
pinctrl_bind_pins():-
pinctrl_bind_pins()->pinctrl_select_state()->pinmux_enable_setting()->
pin_request()
But pinctrl_bind_pins() only returns -EPROBE_DEFER which makes device
driver probe successful even if the pin request is rejected by the pin
controller subsystem.
This commit modifies pinctrl_bind_pins() to return error if the pin is
rejected by pin control subsystem.
Signed-off-by: Deepak Das <deepak_das@mentor.com>
---
drivers/base/pinctrl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/pinctrl.c b/drivers/base/pinctrl.c
index 0762975..e65c1af 100644
--- a/drivers/base/pinctrl.c
+++ b/drivers/base/pinctrl.c
@@ -92,7 +92,7 @@ cleanup_alloc:
dev->pins = NULL;
/* Only return deferrals */
- if (ret != -EPROBE_DEFER)
+ if ((ret != -EPROBE_DEFER) && (ret != -EINVAL))
ret = 0;
return ret;
--
1.9.1
next reply other threads:[~2016-09-13 7:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-13 7:13 Deepak [this message]
2016-09-13 7:13 ` [PATCH] driver: base: pinctrl: return error from pinctrl_bind_pins() Deepak
2016-09-13 11:59 ` Linus Walleij
2016-09-13 13:41 ` Deepak Das
2016-09-13 21:01 ` Linus Walleij
2016-09-14 6:22 ` Deepak Das
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=57D7A700.8080402@mentor.com \
--to=deepak_das@mentor.com \
--cc=Vladimir_Zapolskiy@mentor.com \
--cc=linus.walleij@linaro.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/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.