Re: [PATCH 2/2] ndctl/namespace: Suppress ENODEV when processing all namespaces.

When processing all namespaces and no namespaces exist user gets the default -ENOENT. Set default rc to 0 when processing all namespaces. This avoids confusing error message printed in addition to the message saying 0 namespaces were affected. Before: # ndctl check-namespace all namespace0.0: namespace_check: namespace0.0: check aborted, namespace online error checking namespaces: Device or resource busy checked 0 namespaces # ndctl disable-namespace all disabled 1 namespace # ndctl check-namespace all namespace0.0: namespace_check: Unable to recover any BTT info blocks error checking namespaces: No such device or address checked 0 namespaces # ndctl destroy-namespace all destroyed 1 namespace # ndctl check-namespace all error checking namespaces: No such device or address checked 0 namespaces # ndctl destroy-namespace all error destroying namespaces: No such device or address destroyed 0 namespaces After: # ndctl check-namespace all namespace0.0: namespace_check: namespace0.0: check aborted, namespace online error checking namespaces: Device or resource busy checked 0 namespaces # ndctl disable-namespace namespace0.0 disabled 1 namespace # ndctl check-namespace all namespace0.0: namespace_check: Unable to recover any BTT info blocks error checking namespaces: No such device or address checked 0 namespaces # ndctl destroy-namespace all destroyed 1 namespace # ndctl check-namespace all checked 0 namespaces # ndctl destroy-namespace all destroyed 0 namespaces # ndctl destroy-namespace all destroyed 0 namespaces Note: this does change the return value from -ENOENT to 0 in the cases when no namespaces exist and processing all namespaces was requested. Signed-off-by: Michal Suchanek <msuchanek(a)suse.de&gt;