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misc: mic: SCIF Fix scif_get_new_port() error handling

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[ Upstream commit a39284ae9d ]

There are only 2 callers of scif_get_new_port() and both appear to get
the error handling wrong.  Both treat zero returns as error, but it
actually returns negative error codes and >= 0 on success.

Fixes: e9089f43c9 ("misc: mic: SCIF open close bind and listen APIs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2018-08-02 11:42:22 +03:00 • committed by Greg Kroah-Hartman
commit fb9dabb6fc
1 changed files with 9 additions and 11 deletions
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20
drivers/misc/mic/scif/scif_api.c
View file

@ -370,11 +370,10 @@ int scif_bind(scif_epd_t epd, u16 pn)
goto scif_bind_exit;
}
} else {
pn = scif_get_new_port();
if (!pn) {
ret = -ENOSPC;
ret = scif_get_new_port();
if (ret < 0)
goto scif_bind_exit;
}
pn = ret;
}
ep->state = SCIFEP_BOUND;
@ -648,13 +647,12 @@ int __scif_connect(scif_epd_t epd, struct scif_port_id *dst, bool non_block)
err = -EISCONN;
break;
case SCIFEP_UNBOUND:
ep->port.port = scif_get_new_port();
if (!ep->port.port) {
err = -ENOSPC;
} else {
ep->port.node = scif_info.nodeid;
ep->conn_async_state = ASYNC_CONN_IDLE;
}
err = scif_get_new_port();
if (err < 0)
break;
ep->port.port = err;
ep->port.node = scif_info.nodeid;
ep->conn_async_state = ASYNC_CONN_IDLE;
/* Fall through */
case SCIFEP_BOUND:
/*