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 1AFA0321F49; Mon, 18 Aug 2025 13:24:39 +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=1755523479; cv=none; b=CjFBBvPDNsmITy8GCzvChaUFMpt9fPpKuizcm+HUeJmU+zN4MNHMRD4/7F4STU9nkMLwU5/c5AMFqneYGbp8jcoi5MDVZHul4RWwi5esbX2ZUiop4H4B7I/0EYvyXQ9rp2d3DQrGjRim3VjmQEqQf3ImnyBckH/wjFxXQjEJRbk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755523479; c=relaxed/simple; bh=afD2gKZTI0vHwtGKkIpMpH1cUzG5792orE4gm6pGp0M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=s0LEWCqZ+XTv7WKQ0Ts3yQly2IcPMoKgP9BiXS9lJmdXUp/GIZw6Xe16IiYQE5Mw5Sv6V+YJEXixkcVLE/KtahlRwMUGOu1U+IrV9P93sUxJmr3VGzCQ/37TungF/OFzYdbhO+03QE+Iadh6LqaHOmR75o8MzWmyBFcgIF9ZOAE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=k87wZYeu; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="k87wZYeu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7D7B5C4CEEB; Mon, 18 Aug 2025 13:24:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755523479; bh=afD2gKZTI0vHwtGKkIpMpH1cUzG5792orE4gm6pGp0M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k87wZYeuAyTfuc05yP4q878uHDxfd8E2xu81ecFYV+RGSgbTXmMBXLkO0nvpRTSYM qkQhVxWzYmUqSktfgf0y+3yW7x905JyFCB8tP+QNMPQYX/x5qJu+nA0YWtFHPabajP 5fOvqT7moZhgdreqyUMZIs7ertiFu1tr34fc+XWg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tomasz Michalec , Abhishek Pandit-Subedi , Tzung-Bi Shih , Sasha Levin Subject: [PATCH 6.15 182/515] platform/chrome: cros_ec_typec: Defer probe on missing EC parent Date: Mon, 18 Aug 2025 14:42:48 +0200 Message-ID: <20250818124505.383169973@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818124458.334548733@linuxfoundation.org> References: <20250818124458.334548733@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tomasz Michalec [ Upstream commit 8866f4e557eba43e991f99711515217a95f62d2e ] If cros_typec_probe is called before EC device is registered, cros_typec_probe will fail. It may happen when cros-ec-typec.ko is loaded before EC bus layer module (e.g. cros_ec_lpcs.ko, cros_ec_spi.ko). Return -EPROBE_DEFER when cros_typec_probe doesn't get EC device, so the probe function can be called again after EC device is registered. Signed-off-by: Tomasz Michalec Reviewed-by: Abhishek Pandit-Subedi Link: https://lore.kernel.org/r/20250610153748.1858519-1-tmichalec@google.com Signed-off-by: Tzung-Bi Shih Signed-off-by: Sasha Levin --- drivers/platform/chrome/cros_ec_typec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index 7678e3d05fd3..f437b594055c 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -1272,8 +1272,8 @@ static int cros_typec_probe(struct platform_device *pdev) typec->ec = dev_get_drvdata(pdev->dev.parent); if (!typec->ec) { - dev_err(dev, "couldn't find parent EC device\n"); - return -ENODEV; + dev_warn(dev, "couldn't find parent EC device\n"); + return -EPROBE_DEFER; } platform_set_drvdata(pdev, typec); -- 2.39.5