git: 0469f7ab3c7e - stable/14 - ctl: Always return errno values from ctl_port_register

The branch stable/14 has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=0469f7ab3c7e460d581ba37569598e4c90395a6c

commit 0469f7ab3c7e460d581ba37569598e4c90395a6c
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2023-12-27 18:09:24 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2024-01-18 22:40:31 +0000

    ctl: Always return errno values from ctl_port_register
    
    Return EBUSY instead of a bare 1 if a port number is already active.
    
    Sponsored by:   Chelsio Communications
    Differential Revision:  https://reviews.freebsd.org/D42929
    
    (cherry picked from commit e03e77ba4d0570511fdc1be192459e1160c650a6)
---
 sys/cam/ctl/ctl_frontend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/cam/ctl/ctl_frontend.c b/sys/cam/ctl/ctl_frontend.c
index ed5e2b3ac8c9..dd4607abb76b 100644
--- a/sys/cam/ctl/ctl_frontend.c
+++ b/sys/cam/ctl/ctl_frontend.c
@@ -163,7 +163,7 @@ ctl_port_register(struct ctl_port *port)
 	if ((port_num < 0) ||
 	    (ctl_set_mask(softc->ctl_port_mask, port_num) < 0)) {
 		mtx_unlock(&softc->ctl_lock);
-		return (1);
+		return (EBUSY);
 	}
 	softc->num_ports++;
 	mtx_unlock(&softc->ctl_lock);