git: 51ce77b26157 - stable/13 - bhyve: ahci: Fix regression with no ports

The branch stable/13 has been updated by freqlabs:

URL: https://cgit.FreeBSD.org/src/commit/?id=51ce77b261575890d3cecb7529357608b7972ac4

commit 51ce77b261575890d3cecb7529357608b7972ac4
Author:     Ryan Moeller <freqlabs@FreeBSD.org>
AuthorDate: 2022-01-21 12:59:25 +0000
Commit:     Ryan Moeller <freqlabs@FreeBSD.org>
CommitDate: 2022-01-28 14:32:31 +0000

    bhyve: ahci: Fix regression with no ports
    
    An AHCI controller may be specified with no connected ports.  Avoid
    dumping core in this case for compatibility with existing VM configs.
    
    Reviewed by:    khng, jhb
    Fixes:          621b5090487de Refactor configuration management in bhyve.
    MFC after:      1 week
    Sponsored by:   iXsystems, Inc.
    Differential Revision:  https://reviews.freebsd.org/D33969
    
    (cherry picked from commit b252fb24301c1f7e7d83eab631e7d9fa947e227d)
---
 usr.sbin/bhyve/pci_ahci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.sbin/bhyve/pci_ahci.c b/usr.sbin/bhyve/pci_ahci.c
index 38ec87c34eed..7f7259abfe66 100644
--- a/usr.sbin/bhyve/pci_ahci.c
+++ b/usr.sbin/bhyve/pci_ahci.c
@@ -2440,7 +2440,7 @@ pci_ahci_init(struct vmctx *ctx, struct pci_devinst *pi, nvlist_t *nvl)
 	slots = 32;
 
 	ports_nvl = find_relative_config_node(nvl, "port");
-	for (p = 0; p < MAX_PORTS; p++) {
+	for (p = 0; ports_nvl != NULL && p < MAX_PORTS; p++) {
 		struct ata_params *ata_ident = &sc->port[p].ata_ident;
 		char ident[AHCI_PORT_IDENT];