dm writecache: remove BUG() and fail gracefully instead
commit5.4-rM2-2.2.x-imx-squashed857c4c0a8b
upstream. Building on arch/s390/ results in this build error: cc1: some warnings being treated as errors ../drivers/md/dm-writecache.c: In function 'persistent_memory_claim': ../drivers/md/dm-writecache.c:323:1: error: no return statement in function returning non-void [-Werror=return-type] Fix this by replacing the BUG() with an -EOPNOTSUPP return. Fixes:48debafe4f
("dm: add writecache target") Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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8e2c50315f
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b9df537e5f
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@ -316,7 +316,7 @@ err1:
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#else
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#else
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static int persistent_memory_claim(struct dm_writecache *wc)
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static int persistent_memory_claim(struct dm_writecache *wc)
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{
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{
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BUG();
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return -EOPNOTSUPP;
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}
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}
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#endif
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#endif
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