Patch "b43legacy: fix debugfs crash" has been added to the 4.8-stable tree

This is a note to let you know that I've just added the patch titled

b43legacy: fix debugfs crash

to the 4.8-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:
b43legacy-fix-debugfs-crash.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Christian Lamparter <[email protected]>
Date: Sat, 17 Sep 2016 21:43:04 +0200
Subject: b43legacy: fix debugfs crash

From: Christian Lamparter <[email protected]>

commit 9c4a45b17e094a090e96beb1138e34c2a10c6b8c upstream.

This patch fixes a crash that happens because b43legacy's debugfs code expects file->f_op to be a pointer to its own b43legacy_debugfs_fops struct. This is no longer the case since commit 9fd4dcece43a
("debugfs: prevent access to possibly dead file_operations at file open")

---
 drivers/net/wireless/broadcom/b43legacy/debugfs.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

@@ -221,7 +221,8 @@ static ssize_t b43legacy_debugfs_read(st
 		goto out_unlock;
 	}
 
-	dfops = container_of(file->f_op, struct b43legacy_debugfs_fops, fops);
+	dfops = container_of(debugfs_real_fops(file),
+			     struct b43legacy_debugfs_fops, fops);
 	if (!dfops->read) {
 		err = -ENOSYS;
 		goto out_unlock;

@@ -287,7 +288,8 @@ static ssize_t b43legacy_debugfs_write(s
 		goto out_unlock;
 	}
 
-	dfops = container_of(file->f_op, struct b43legacy_debugfs_fops, fops);
+	dfops = container_of(debugfs_real_fops(file),
+			     struct b43legacy_debugfs_fops, fops);
 	if (!dfops->write) {
 		err = -ENOSYS;
 		goto out_unlock;

Patches currently in stable-queue which might be from [email protected] are

queue-4.8/b43-fix-debugfs-crash.patch queue-4.8/carl9170-fix-debugfs-crashes.patch queue-4.8/b43legacy-fix-debugfs-crash.patch queue-4.8/debugfs-introduce-a-public-file_operations-accessor.patch