linux-kernel - Re: Fix build breakage in your tree in the drivers/staging/iio directory

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Date:	Sat, 26 Nov 2011 07:41:50 -0800
From:	Greg KH <greg@...ah.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>
Cc:	Jonathan Cameron <jic23@....ac.uk>, linux-kernel@...r.kernel.org
Subject: Re: Fix build breakage in your tree in the drivers/staging/iio
 directory

On Sat, Nov 26, 2011 at 07:10:13AM -0800, Greg KH wrote:
> Linus, can you please revert b46413367961c2e8bd827e067a231be982aaeee2 in
> your tree?  It breaks the build and didn't seem to be tested by Al.
> 
> I'll prepare a fix for this based on Al's patch, that doesn't break
> things and send it to you later next week (I'm about to jump on a plane
> for Tokyo in a few hours and can't test one at the moment), but for now,
> this should be reverted as I'm getting lots of emails about it.

Or, here's a simple one-line patch that fixes the build breakage, if you
just want to apply it instead:

-------------------

From: Greg Kroah-Hartman <gregkh@...e.de>
Subject: fix build breakage in drivers/staging/iio/industrialio-core.c

This was introduced in commit b46413367961c2e8bd827e067a231be982aaeee2
(iio: fix a leak due to improper use of anon_inode_getfd())

Cc: Al Viro <viro@...iv.linux.org.uk>
Cc: Jonathan Cameron <jic23@....ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 2656409..6542489 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -259,7 +259,7 @@ static int iio_event_getfd(struct iio_dev *indio_dev)
 				indio_dev->event_interface, O_RDONLY);
 	if (fd < 0) {
 		mutex_lock(&indio_dev->event_interface->event_list_lock);
-		clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
+		clear_bit(IIO_BUSY_BIT_POS, &indio_dev->event_interface->flags);
 		mutex_unlock(&indio_dev->event_interface->event_list_lock);
 	}
 	return fd;
--
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