This is a note to let you know that I've just added the patch titled
iio: of_iio_channel_get_by_name() returns non-null pointers for error legs
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iio-of_iio_channel_get_by_name-returns-non-null-pointers-for-error-legs.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a2c12493ed7e63a18cef33a71686d12ffcd6600e Mon Sep 17 00:00:00 2001
From: Adam Thomson <Adam.Thomson.Opensource@xxxxxxxxxxx>
Date: Thu, 6 Nov 2014 12:11:00 +0000
Subject: iio: of_iio_channel_get_by_name() returns non-null pointers for error legs
From: Adam Thomson <Adam.Thomson.Opensource@xxxxxxxxxxx>
commit a2c12493ed7e63a18cef33a71686d12ffcd6600e upstream.
Currently in the inkern.c code for IIO framework, the function
of_iio_channel_get_by_name() will return a non-NULL pointer when
it cannot find a channel using of_iio_channel_get() and when it
tries to search for 'io-channel-ranges' property and fails. This
is incorrect behaviour as the function which calls this expects
a NULL pointer for failure. This patch rectifies the issue.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@xxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/inkern.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -183,7 +183,7 @@ static struct iio_channel *of_iio_channe
else if (name && index >= 0) {
pr_err("ERROR: could not get IIO channel %s:%s(%i)\n",
np->full_name, name ? name : "", index);
- return chan;
+ return NULL;
}
/*
@@ -193,8 +193,9 @@ static struct iio_channel *of_iio_channe
*/
np = np->parent;
if (np && !of_get_property(np, "io-channel-ranges", NULL))
- break;
+ return NULL;
}
+
return chan;
}
@@ -317,6 +318,7 @@ struct iio_channel *iio_channel_get(stru
if (channel != NULL)
return channel;
}
+
return iio_channel_get_sys(name, channel_name);
}
EXPORT_SYMBOL_GPL(iio_channel_get);
Patches currently in stable-queue which might be from Adam.Thomson.Opensource@xxxxxxxxxxx are
queue-3.14/iio-of_iio_channel_get_by_name-returns-non-null-pointers-for-error-legs.patch
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