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terminal: grdev: treat udev-devices without devnum as hotplug

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If we get udev-device events via sysview, but they lack devnum
annotations, we know it cannot be a DRM card. Look through it's parents
and treat it as hotplug event in case we find such a card.

This will treat any new/removed connectors as sub-devices of the real
card, instead of as devices on its own.
This commit is contained in:
David Herrmann 2014-09-20 09:48:22 +02:00
parent 46c9a12780
commit a3eabec96b
1 changed files with 13 additions and 7 deletions
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20
src/libsystemd-terminal/grdev.c
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@ -1095,7 +1095,7 @@ void grdev_session_add_drm(grdev_session *session, struct udev_device *ud) {
devnum = udev_device_get_devnum(ud);
if (devnum == 0)
return;
return grdev_session_hotplug_drm(session, ud);
card = grdev_find_drm_card(session, devnum);
if (card)
@ -1120,7 +1120,7 @@ void grdev_session_remove_drm(grdev_session *session, struct udev_device *ud) {
devnum = udev_device_get_devnum(ud);
if (devnum == 0)
return;
return grdev_session_hotplug_drm(session, ud);
card = grdev_find_drm_card(session, devnum);
if (!card)
@ -1130,17 +1130,23 @@ void grdev_session_remove_drm(grdev_session *session, struct udev_device *ud) {
}
void grdev_session_hotplug_drm(grdev_session *session, struct udev_device *ud) {
grdev_card *card;
grdev_card *card = NULL;
struct udev_device *p;
dev_t devnum;
assert(session);
assert(ud);
devnum = udev_device_get_devnum(ud);
if (devnum == 0)
return;
for (p = ud; p; p = udev_device_get_parent_with_subsystem_devtype(p, "drm", NULL)) {
devnum = udev_device_get_devnum(ud);
if (devnum == 0)
continue;
card = grdev_find_drm_card(session, devnum);
if (card)
break;
}
card = grdev_find_drm_card(session, devnum);
if (!card)
return;