Patch "staging: speakup: Replace BUG_ON() with WARN_ON()." has been added to the 4.4-stable tree

Patch "staging: speakup: Replace BUG_ON() with WARN_ON()." has been added to the 4.4-stable tree

[gregkh]

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

    staging: speakup: Replace BUG_ON() with WARN_ON().

to the 4.4-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:
     staging-speakup-replace-bug_on-with-warn_on.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Mon Mar 19 09:58:11 CET 2018
From: Varsha Rao <rvarsha016@gmail.com>
Date: Sat, 25 Feb 2017 17:53:58 +0530
Subject: staging: speakup: Replace BUG_ON() with WARN_ON().

From: Varsha Rao <rvarsha016@gmail.com>


[ Upstream commit d351c2db5420bb17dcd2d9aac7ddb5f64c6d04b3 ]

BUG_ON() is replaced with WARN_ON() and EINVAL is returned, when
WARN_ON() is true. This fixes the following checkpatch issue:

Avoid crashing the kernel - try using WARN_ON & recovery code rather
than BUG() or BUG_ON().

Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/speakup/kobjects.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/staging/speakup/kobjects.c
+++ b/drivers/staging/speakup/kobjects.c
@@ -831,7 +831,9 @@ static ssize_t message_show(struct kobje
 	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
 	unsigned long flags;
 
-	BUG_ON(!group);
+	if (WARN_ON(!group))
+		return -EINVAL;
+
 	spin_lock_irqsave(&speakup_info.spinlock, flags);
 	retval = message_show_helper(buf, group->start, group->end);
 	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
@@ -843,7 +845,9 @@ static ssize_t message_store(struct kobj
 {
 	struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
 
-	BUG_ON(!group);
+	if (WARN_ON(!group))
+		return -EINVAL;
+
 	return message_store_helper(buf, count, group);
 }
 


Patches currently in stable-queue which might be from rvarsha016@gmail.com are

queue-4.4/staging-speakup-replace-bug_on-with-warn_on.patch