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

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[ Upstream commit d351c2db54 ]

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>
This commit is contained in:
Varsha Rao 2017-02-25 17:53:58 +05:30 committed by Greg Kroah-Hartman
parent 3389b38613
commit c2e4c685b3
1 changed files with 6 additions and 2 deletions
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8
drivers/staging/speakup/kobjects.c
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@ -831,7 +831,9 @@ static ssize_t message_show(struct kobject *kobj,
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 kobject *kobj, struct kobj_attribute *attr,
{
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);
}