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From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Berg <bberg@redhat.com>,
	Ulrich Huber <ulrich@huberulrich.de>,
	linux-usb@vger.kernel.org
Subject: [PATCH 2/7] usb: typec: ucsi: Don't stop alt mode registration on busy condition
Date: Mon, 20 Sep 2021 17:24:14 +0300	[thread overview]
Message-ID: <20210920142419.54493-3-heikki.krogerus@linux.intel.com> (raw)
In-Reply-To: <20210920142419.54493-1-heikki.krogerus@linux.intel.com>

If the PPM says it's busy, we can now simply try again.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
 drivers/usb/typec/ucsi/ucsi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index ffb5be51daf85..a35efd8174bd4 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -437,6 +437,8 @@ static int ucsi_register_altmodes(struct ucsi_connector *con, u8 recipient)
 		command |= UCSI_GET_ALTMODE_CONNECTOR_NUMBER(con->num);
 		command |= UCSI_GET_ALTMODE_OFFSET(i);
 		len = ucsi_send_command(con->ucsi, command, alt, sizeof(alt));
+		if (len == -EBUSY)
+			continue;
 		if (len <= 0)
 			return len;
 
-- 
2.33.0


  parent reply	other threads:[~2021-09-20 14:24 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20 14:24 [PATCH 0/7] usb: typec: ucsi: Driver improvements Heikki Krogerus
2021-09-20 14:24 ` [PATCH 1/7] usb: typec: ucsi: Always cancel the command if PPM reports BUSY condition Heikki Krogerus
2021-09-20 14:24 ` Heikki Krogerus [this message]
2021-09-20 14:24 ` [PATCH 3/7] usb: typec: ucsi: Add polling mechanism for partner tasks like alt mode checking Heikki Krogerus
2021-09-20 14:24 ` [PATCH 4/7] usb: typec: ucsi: acpi: Reduce the command completion timeout Heikki Krogerus
2021-09-20 14:24 ` [PATCH 5/7] usb: typec: ucsi: Check the partner alt modes always if there is PD contract Heikki Krogerus
2021-09-20 14:24 ` [PATCH 6/7] usb: typec: ucsi: Read the PDOs in separate work Heikki Krogerus
2021-09-20 14:24 ` [PATCH 7/7] usb: typec: ucsi: Better fix for missing unplug events issue Heikki Krogerus
2021-09-23 14:38 ` [PATCH 0/7] usb: typec: ucsi: Driver improvements Benjamin Berg
2021-09-23 16:06   ` Ulrich Huber
2021-09-24 13:55     ` Heikki Krogerus

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