From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F3D9447ECDF; Fri, 15 May 2026 12:39:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778848749; cv=none; b=hlpYgu840CLmvCakEfK46hLf5J6+ghp2wNlxnHVaRgEu5X7/YruGMetx7pZZSrAdqp48AFd5+cGeBctMWXNDl6BJVjDLhr64HJTGsaTjnWr9+TQXrzTpRxGKLID60MTftKoMxW1UUkJlYUFaZ1gfaBxDWY3iFCaQVN6r6YmUhJQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778848749; c=relaxed/simple; bh=i298VvOeIoBdmUK+OD0uLYAyhZ6aEH4cZba+F0pO2Jk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=SzdqvV2B9zDu9ikkwBQVwbWAcI8b9SYgIecqJjXGcJlgTUH9xCnG3hK5xu2u/uyi1Ch+ab/qZqrPxhMxkMPVFk1ZrNflATHfv9hGewAsgsP5zJLpET7sI6Fk1jltqp6sh15VH4WBmCjNo9RCgMmNkXX6397DP0Kqyf0g/MEccHg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZXq0MCae; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZXq0MCae" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D985C2BCB0; Fri, 15 May 2026 12:39:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778848748; bh=i298VvOeIoBdmUK+OD0uLYAyhZ6aEH4cZba+F0pO2Jk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=ZXq0MCae7wqp13U47Eu3au0PbQT6JLlPxcKzhES4gBFA2CRSbsi9d0GBHmQ/s0Fzj QO56+AwOFwdMm4VG+FZ5BZ7CpsWjqX4CDVzS81crqDcRT0kmP109XoQRUzsa2n9g4q DHdW6LpTGgX/cu2SE3OWP4pFAXNKlDZ3SKSu3OAylvKEzk91Vx/OqnQk7PYt1s3Mij yOnDCrx9nmmiV+x4sqO0cdRrZpr0RtaVbBchSY4VUfsT98nggOzf7PsW4Sk4iJnYyo F/1accmnqaAynb4mjsDJ3ZTqpID2YtOq0l+i9jRTkdc1mzoJwjefLAlkUWYiUyuXCg zC564ICLqfcAQ== From: Konrad Dybcio Date: Fri, 15 May 2026 14:38:44 +0200 Subject: [PATCH v4 4/4] thunderbolt: Add some more descriptive probe error messages Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260515-topic-usb4_nonpcie_prepwork-v4-4-5c818378243e@oss.qualcomm.com> References: <20260515-topic-usb4_nonpcie_prepwork-v4-0-5c818378243e@oss.qualcomm.com> In-Reply-To: <20260515-topic-usb4_nonpcie_prepwork-v4-0-5c818378243e@oss.qualcomm.com> To: Andreas Noever , Mika Westerberg , Yehezkel Bernat Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, usb4-upstream@oss.qualcomm.com, Raghavendra Thoorpu , Konrad Dybcio X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1778848734; l=2134; i=konrad.dybcio@oss.qualcomm.com; s=20230215; h=from:subject:message-id; bh=pqu2VCWMefuVciX3P7frQNj4MipGgNMMNqP0pkNkivk=; b=LZAAigxMzvqYAvHS+I/CqGd7VqnuwVdPcFBxgGwYS/HpUtVFWtf7ZkmcOjUtGsG50+YsheYdR zQdxELkpb8JANR7vTXuchNdMZxQC3EJdoDpM+fCfsv9qTt6Avs5mfpV X-Developer-Key: i=konrad.dybcio@oss.qualcomm.com; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= From: Konrad Dybcio Currently there's a lot of silent error-return paths in various places where nhi_probe() can fail. Sprinkle some prints to make it clearer where the problem is. Signed-off-by: Konrad Dybcio --- drivers/thunderbolt/nhi.c | 4 ++-- drivers/thunderbolt/tb.c | 7 ++++--- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c index 2a8d1b3716c0..2491e08bbd24 100644 --- a/drivers/thunderbolt/nhi.c +++ b/drivers/thunderbolt/nhi.c @@ -1190,7 +1190,7 @@ int nhi_probe(struct tb_nhi *nhi) if (nhi->ops->init) { res = nhi->ops->init(nhi); if (res) - return res; + return dev_err_probe(dev, res, "NHI specific init failed\n"); } tb = nhi_select_cm(nhi); @@ -1211,7 +1211,7 @@ int nhi_probe(struct tb_nhi *nhi) tb_domain_put(tb); wait_for_completion(&nhi->domain_released); nhi_shutdown(nhi); - return res; + return dev_err_probe(dev, res, "failed to add domain\n"); } dev_set_drvdata(dev, tb); diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index e09259b35d40..4fd052e6552e 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -2997,7 +2997,8 @@ static int tb_start(struct tb *tb, bool reset) tb->root_switch = tb_switch_alloc(tb, &tb->dev, 0); if (IS_ERR(tb->root_switch)) - return PTR_ERR(tb->root_switch); + return dev_err_probe(tb->nhi->dev, PTR_ERR(tb->root_switch), + "failed to allocate host router\n"); /* * ICM firmware upgrade needs running firmware and in native @@ -3014,14 +3015,14 @@ static int tb_start(struct tb *tb, bool reset) ret = tb_switch_configure(tb->root_switch); if (ret) { tb_switch_put(tb->root_switch); - return ret; + return dev_err_probe(tb->nhi->dev, ret, "failed to configure host router\n"); } /* Announce the switch to the world */ ret = tb_switch_add(tb->root_switch); if (ret) { tb_switch_put(tb->root_switch); - return ret; + return dev_err_probe(tb->nhi->dev, ret, "failed to add host router\n"); } /* -- 2.54.0