Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

The UDP reuseport conflict was a little bit tricky.

The net-next code, via bpf-next, extracted the reuseport handling
into a helper so that the BPF sk lookup code could invoke it.

At the same time, the logic for reuseport handling of unconnected
sockets changed via commit efc6b6f6c3113e8b203b9debfb72d81e0f3dcace
which changed the logic to carry on the reuseport result into the
rest of the lookup loop if we do not return immediately.

This requires moving the reuseport_has_conns() logic into the callers.

While we are here, get rid of inline directives as they do not belong
in foo.c files.

The other changes were cases of more straightforward overlapping
modifications.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 53 insertions, 29 deletions

diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index 747afc875f91..0c35cd5e0d1d 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -1388,18 +1388,57 @@ static struct notifier_block etm4_cpu_pm_nb = {
 	.notifier_call = etm4_cpu_pm_notify,
 };
 
-static int etm4_cpu_pm_register(void)
+/* Setup PM. Called with cpus locked. Deals with error conditions and counts */
+static int etm4_pm_setup_cpuslocked(void)
 {
-	if (IS_ENABLED(CONFIG_CPU_PM))
-		return cpu_pm_register_notifier(&etm4_cpu_pm_nb);
+	int ret;
 
-	return 0;
+	if (etm4_count++)
+		return 0;
+
+	ret = cpu_pm_register_notifier(&etm4_cpu_pm_nb);
+	if (ret)
+		goto reduce_count;
+
+	ret = cpuhp_setup_state_nocalls_cpuslocked(CPUHP_AP_ARM_CORESIGHT_STARTING,
+						   "arm/coresight4:starting",
+						   etm4_starting_cpu, etm4_dying_cpu);
+
+	if (ret)
+		goto unregister_notifier;
+
+	ret = cpuhp_setup_state_nocalls_cpuslocked(CPUHP_AP_ONLINE_DYN,
+						   "arm/coresight4:online",
+						   etm4_online_cpu, NULL);
+
+	/* HP dyn state ID returned in ret on success */
+	if (ret > 0) {
+		hp_online = ret;
+		return 0;
+	}
+
+	/* failed dyn state - remove others */
+	cpuhp_remove_state_nocalls_cpuslocked(CPUHP_AP_ARM_CORESIGHT_STARTING);
+
+unregister_notifier:
+	cpu_pm_unregister_notifier(&etm4_cpu_pm_nb);
+
+reduce_count:
+	--etm4_count;
+	return ret;
 }
 
-static void etm4_cpu_pm_unregister(void)
+static void etm4_pm_clear(void)
 {
-	if (IS_ENABLED(CONFIG_CPU_PM))
-		cpu_pm_unregister_notifier(&etm4_cpu_pm_nb);
+	if (--etm4_count != 0)
+		return;
+
+	cpu_pm_unregister_notifier(&etm4_cpu_pm_nb);
+	cpuhp_remove_state_nocalls(CPUHP_AP_ARM_CORESIGHT_STARTING);
+	if (hp_online) {
+		cpuhp_remove_state_nocalls(hp_online);
+		hp_online = 0;
+	}
 }
 
 static int etm4_probe(struct amba_device *adev, const struct amba_id *id)
@@ -1453,24 +1492,15 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id)
 				etm4_init_arch_data,  drvdata, 1))
 		dev_err(dev, "ETM arch init failed\n");
 
-	if (!etm4_count++) {
-		cpuhp_setup_state_nocalls_cpuslocked(CPUHP_AP_ARM_CORESIGHT_STARTING,
-						     "arm/coresight4:starting",
-						     etm4_starting_cpu, etm4_dying_cpu);
-		ret = cpuhp_setup_state_nocalls_cpuslocked(CPUHP_AP_ONLINE_DYN,
-							   "arm/coresight4:online",
-							   etm4_online_cpu, NULL);
-		if (ret < 0)
-			goto err_arch_supported;
-		hp_online = ret;
+	ret = etm4_pm_setup_cpuslocked();
+	cpus_read_unlock();
 
-		ret = etm4_cpu_pm_register();
-		if (ret)
-			goto err_arch_supported;
+	/* etm4_pm_setup_cpuslocked() does its own cleanup - exit on error */
+	if (ret) {
+		etmdrvdata[drvdata->cpu] = NULL;
+		return ret;
 	}
 
-	cpus_read_unlock();
-
 	if (etm4_arch_supported(drvdata->arch) == false) {
 		ret = -EINVAL;
 		goto err_arch_supported;
@@ -1517,13 +1547,7 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id)
 
 err_arch_supported:
 	etmdrvdata[drvdata->cpu] = NULL;
-	if (--etm4_count == 0) {
-		etm4_cpu_pm_unregister();
-
-		cpuhp_remove_state_nocalls(CPUHP_AP_ARM_CORESIGHT_STARTING);
-		if (hp_online)
-			cpuhp_remove_state_nocalls(hp_online);
-	}
+	etm4_pm_clear();
 	return ret;
 }