[PATCH v2] powerpc/pseries: remove returning ENODEV when uevent is triggered

[Lidong Zhong]

We noticed the following nuisance messages during boot process

[    7.120610][ T1060] vio vio: uevent: failed to send synthetic uevent
[    7.122281][ T1060] vio 4000: uevent: failed to send synthetic uevent
[    7.122304][ T1060] vio 4001: uevent: failed to send synthetic uevent
[    7.122324][ T1060] vio 4002: uevent: failedto send synthetic uevent
[    7.122345][ T1060] vio 4004: uevent: failed to send synthetic uevent

It's caused by either vio_register_device_node() fails to set dev->of_node
or the missing "compatible" property. To keep align with the definition of
modalias in modalias_show(), we remove the return of ENODEV in such cases.
The failure messages can also be suppressed with this change.

v2: keep align the definition of modalias with modalias_show()
Signed-off-by: Lidong Zhong <lidong.zhong at suse.com>
---
 arch/powerpc/platforms/pseries/vio.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c
index 90ff85c879bf..b2babfdbc40b 100644
--- a/arch/powerpc/platforms/pseries/vio.c
+++ b/arch/powerpc/platforms/pseries/vio.c
@@ -1592,13 +1592,9 @@ static int vio_hotplug(const struct device *dev, struct kobj_uevent_env *env)
 	const char *cp;
 
 	dn = dev->of_node;
-	if (!dn)
-		return -ENODEV;
-	cp = of_get_property(dn, "compatible", NULL);
-	if (!cp)
-		return -ENODEV;
+	if (dn && (cp = of_get_property(dn, "compatible", NULL)))
+		add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp);
 
-	add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp);
 	return 0;
 }
 
-- 
2.35.3