sysfs: convert BUG_ON to WARN_ON
It's rude to crash the system just because the developer did something wrong, as it prevents them from usually even seeing what went wrong. So convert the few BUG_ON() calls that have snuck into the sysfs code over the years to WARN_ON() to make it more "friendly". All of these are able to be recovered from, so it makes no sense to crash. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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