linux-kernel - [PATCH 3/5] thunderbolt: Print connected devices

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Date:   Mon,  1 Oct 2018 12:31:20 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Lukas Wunner <lukas@...ner.de>, linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] thunderbolt: Print connected devices

The previous patch made the driver less verbose meanining that all the
switch structures and ports are now logged as debug level. However, we
have been missing similar output that USB for intance prints when a new
USB device is connected and disconnected. This information is useful for
end users as well as developers because it immediately shows the actual
device that was connected.

This patch adds printing of the actual connected devices to the driver.

Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
Acked-by: Yehezkel Bernat <yehezkelshb@...il.com>
---
 drivers/thunderbolt/switch.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 81134ee29578..9f44a2924dac 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -1402,6 +1402,14 @@ int tb_switch_add(struct tb_switch *sw)
 	if (ret)
 		return ret;
 
+	if (tb_route(sw)) {
+		dev_info(&sw->dev, "new device found, vendor=%#x device=%#x\n",
+			 sw->vendor, sw->device);
+		if (sw->vendor_name && sw->device_name)
+			dev_info(&sw->dev, "%s %s\n", sw->vendor_name,
+				 sw->device_name);
+	}
+
 	ret = tb_switch_nvm_add(sw);
 	if (ret) {
 		device_del(&sw->dev);
@@ -1453,6 +1461,9 @@ void tb_switch_remove(struct tb_switch *sw)
 		tb_plug_events_active(sw, false);
 
 	tb_switch_nvm_remove(sw);
+
+	if (tb_route(sw))
+		dev_info(&sw->dev, "device disconnected\n");
 	device_unregister(&sw->dev);
 }
 
-- 
2.19.0