Discuss SCMI firmware, SCMI drivers in Linux, U-boot, OP-TEE
 help / color / mirror / Atom feed
From: Sudeep Holla <sudeep.holla@kernel.org>
To: arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Cristian Marussi <cristian.marussi@arm.com>
Subject: [PATCH v3 03/17] firmware: arm_scmi: Clean up channels on setup failure
Date: Fri, 03 Jul 2026 21:22:39 +0100	[thread overview]
Message-ID: <20260703-scmi_core_fixes-v3-3-5bae9766abfc@kernel.org> (raw)
In-Reply-To: <20260703-scmi_core_fixes-v3-0-5bae9766abfc@kernel.org>

scmi_channels_setup() can fail after the common BASE channel or earlier
protocol channels have already been registered in the TX/RX IDRs.

Route this failure through the existing channel cleanup label so the
transport channels, transport devices and IDR state created before the
failure are released before the probe error path frees the SCMI instance
ID.

Fixes: 05a2801d8b90 ("firmware: arm_scmi: Use dedicated devices to initialize channels")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>
---
 drivers/firmware/arm_scmi/driver.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index b9ba566fc759..861087b2920e 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -3262,7 +3262,7 @@ static int scmi_probe(struct platform_device *pdev)
 	ret = scmi_channels_setup(info);
 	if (ret) {
 		err_str = "failed to setup channels\n";
-		goto clear_ida;
+		goto clear_txrx_setup;
 	}
 
 	ret = bus_register_notifier(&scmi_bus_type, &info->bus_nb);
@@ -3377,7 +3377,6 @@ static int scmi_probe(struct platform_device *pdev)
 	bus_unregister_notifier(&scmi_bus_type, &info->bus_nb);
 clear_txrx_setup:
 	scmi_cleanup_txrx_channels(info);
-clear_ida:
 	ida_free(&scmi_id, info->id);
 
 out_err:

-- 
2.43.0


  parent reply	other threads:[~2026-07-03 20:25 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-03 20:22 [PATCH v3 00/17] firmware: arm_scmi: Fix SCMI core cleanup paths Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 01/17] firmware: arm_scmi: Fix OF node reference handling Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 02/17] firmware: arm_scmi: Fix transport device teardown lookup Sudeep Holla
2026-07-03 20:22 ` Sudeep Holla [this message]
2026-07-03 20:22 ` [PATCH v3 04/17] firmware: arm_scmi: Fix SCMI device destroy lifetimes Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 05/17] firmware: arm_scmi: Free transport channel on IDR failure Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 06/17] firmware: arm_scmi: Unregister device notifier before IDR teardown Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 07/17] firmware: arm_scmi: Unwind TX receiver mailbox setup failure Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 08/17] firmware: arm_scmi: Unwind P2A " Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 09/17] firmware: arm_scmi: Protect device request lookup with RCU Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 10/17] firmware: arm_scmi: Avoid IDR updates while cleaning channels Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 11/17] firmware: arm_scmi: Clear SystemPower flag on create failure Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 12/17] firmware: arm_scmi: Reject out of range DT protocol IDs Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 13/17] firmware: arm_scmi: Stop channels before notification teardown Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 14/17] firmware: arm_scmi: Publish channel state before mailbox request Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 15/17] firmware: arm_scmi: Use channel ID for transport teardown Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 16/17] firmware: arm_scmi: Drop handle on protocol bind failures Sudeep Holla
2026-07-03 20:22 ` [PATCH v3 17/17] firmware: arm_scmi: Clear virtio channel lists on free Sudeep Holla

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260703-scmi_core_fixes-v3-3-5bae9766abfc@kernel.org \
    --to=sudeep.holla@kernel.org \
    --cc=arm-scmi@vger.kernel.org \
    --cc=cristian.marussi@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox