[PATCH] power: supply: cros_usbpd: Don't show messages for no charging ports found

[PATCH] power: supply: cros_usbpd: Don't show messages for no charging ports found

[Mario Limonciello]

From: Mario Limonciello <mario.limonciello@amd.com>

Framework 13 and 16 don't use cros_usbpd but do use cros_ec. The following
sequence of messages is totally unnecessary.

[    5.545352] cros-usbpd-charger cros-usbpd-charger.4.auto: No USB PD
charging ports found
[    5.546722] cros-usbpd-charger cros-usbpd-charger.4.auto: Unexpected
number of charge port count
[    5.546730] cros-usbpd-charger cros-usbpd-charger.4.auto: Failing
probe (err:0xffffffb9)
[    5.546735] cros-usbpd-charger cros-usbpd-charger.4.auto: probe with
driver cros-usbpd-charger failed with error -71

Link: https://lore.kernel.org/chrome-platform/20240403004713.130365-1-dustin@howett.net/
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
 drivers/power/supply/cros_usbpd-charger.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
index b6c96376776a..4e69da2cce7b 100644
--- a/drivers/power/supply/cros_usbpd-charger.c
+++ b/drivers/power/supply/cros_usbpd-charger.c
@@ -570,7 +570,8 @@ static int cros_usbpd_charger_probe(struct platform_device *pd)
 		 * This can happen on a system that doesn't support USB PD.
 		 * Log a message, but no need to warn.
 		 */
-		dev_info(dev, "No USB PD charging ports found\n");
+		dev_dbg(dev, "No USB PD charging ports found\n");
+		return -ENODEV;
 	}
 
 	charger->num_charger_ports = cros_usbpd_charger_get_num_ports(charger);
-- 
2.34.1

Re: [PATCH] power: supply: cros_usbpd: Don't show messages for no charging ports found

[Tzung-Bi Shih]

On Sat, Apr 06, 2024 at 02:17:34PM -0500, Mario Limonciello wrote:
> From: Mario Limonciello <mario.limonciello@amd.com>
> 
> Framework 13 and 16 don't use cros_usbpd but do use cros_ec. The following
> sequence of messages is totally unnecessary.

In the case, the EC firmware shouldn't report the feature.  See [1].

[1]: https://elixir.bootlin.com/linux/v6.8/source/drivers/mfd/cros_ec_dev.c#L106