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5ac188b12e
If riocm_get_channel() fails, then we should just return -EINVAL. Calling riocm_put_channel() will trigger a NULL dereference and generally we should call put() if the get() didn't succeed. Link: http://lkml.kernel.org/r/20190110130230.GB27017@kadam Fixes: b6e8d4aa1110 ("rapidio: add RapidIO channelized messaging driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>