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Dominique MartinetandGreg Kroah-Hartman
677294e4da
This is a pre-requisite for the backport of commit74363ec674("zram: fix uninitialized ZRAM not releasing backing device"), which has been implemented differently in commit7ac07a26de("zram: preparation for multi-zcomp support") upstream. We only need to ensure that zcomp_destroy is not called with a NULL comp, so add this check as the other commit cannot be backported easily. Stable-dep-of:74363ec674("zram: fix uninitialized ZRAM not releasing backing device") Link: https://lore.kernel.org/Z3ytcILx4S1v_ueJ@codewreck.org Suggested-by: Kairui Song <kasong@tencent.com> Signed-off-by: Dominique Martinet <dominique.martinet@atmark-techno.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>