[PATCH 1/2] udevng: Don't crash for non-QMI devices

[Denis Kenzior <denkenz@gmail.com>]

In cases where the modem detected isn't QMI, do not crash when trying to
print the qmi devnode.

ofonod[278551]: Aborting (signal 11) [src/ofonod]
ofonod[278551]: ++++++++ backtrace ++++++++
ofonod[278551]: #0  0x7a779c5cbe20 in /usr/lib/libc.so.6
ofonod[278551]: #1  0x413470 in setup_sierra() at plugins/udevng.c:497
ofonod[278551]: #2  0x410a67 in create_modem() at plugins/udevng.c:2557
ofonod[278551]: #3  0x7a779c80b551 in /usr/lib/libglib-2.0.so.0
ofonod[278551]: #4  0x41955f in check_modem_list() at plugins/udevng.c:2626
ofonod[278551]: #5  0x7a779c81f43e in /usr/lib/libglib-2.0.so.0
ofonod[278551]: #6  0x7a779c81e199 in /usr/lib/libglib-2.0.so.0
ofonod[278551]: #7  0x7a779c87d3bf in /usr/lib/libglib-2.0.so.0
ofonod[278551]: #8  0x7a779c81edc7 in /usr/lib/libglib-2.0.so.0
ofonod[278551]: #9  0x5291e6 in main() at src/main.c:316
ofonod[278551]: #10 0x7a779c5b4d4a in /usr/lib/libc.so.6
ofonod[278551]: #11 0x7a779c5b4e0c in /usr/lib/libc.so.6
ofonod[278551]: +++++++++++++++++++++++++++
---
 plugins/udevng.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/plugins/udevng.c b/plugins/udevng.c
index d3ce3d5b3f7c..07c87eb8aa08 100644
--- a/plugins/udevng.c
+++ b/plugins/udevng.c
@@ -495,7 +495,8 @@ static gboolean setup_sierra(struct modem_info *modem)
 					get_ifname(net));
 done:
 	DBG("modem=%s app=%s net=%s diag=%s qmi=%s",
-			mdm, app, get_ifname(net), diag, qmi->devnode);
+			mdm, app, get_ifname(net), diag,
+			qmi ? qmi->devnode : NULL);
 
 	ofono_modem_set_string(modem->modem, "Modem", mdm);
 	ofono_modem_set_string(modem->modem, "App", app);
@@ -574,7 +575,7 @@ static gboolean setup_huawei(struct modem_info *modem)
 					get_ifname(net));
 done:
 	DBG("mdm=%s pcui=%s diag=%s qmi=%s net=%s",
-		mdm, pcui, diag, qmi->devnode, get_ifname(net));
+		mdm, pcui, diag, qmi ? qmi->devnode : NULL, get_ifname(net));
 
 	ofono_modem_set_string(modem->modem, "Modem", mdm);
 	ofono_modem_set_string(modem->modem, "Pcui", pcui);
-- 
2.45.0