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 7FD6228314A; Tue, 26 Aug 2025 13:19:15 +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=1756214355; cv=none; b=ns+uuCrpa4HwztB4H0uby0rG2ejahONwxXYFb6g346Qgwmb0oZanvkv86R2Iu0j8WCdlAIv0H6XTh19Mf6aWJwLf/H2Znt2DAUL5hcwj5c+W3W4WWAk7gjRjzlmVG5ARKHJYq5bW/x/9zVZ4MxwjHqJ/2yZXNHACLXX0sZZpSD0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756214355; c=relaxed/simple; bh=xDXR5IhDbD9RTctr4sDDZXccXCdoZrJHdgkVwZPI96A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fQDL1hZYZxrci0FdZWMQjFjCRDD5MNtQ58Zb1y/X1eJoErA2L9Wtz5RGXmN4lUXfM7JlqzXgSykfSDFEqVO3QHOSGy3KCnji2YIC3hqsHT6KK+G4RJ9UQfr2QDrGTXKU0R25S0d/JKRv2UrKlKA5nqgqrDBEyoT/WYnFo0L1VyE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=XacWHYZ+; 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="XacWHYZ+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 161C1C4CEF1; Tue, 26 Aug 2025 13:19:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756214355; bh=xDXR5IhDbD9RTctr4sDDZXccXCdoZrJHdgkVwZPI96A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XacWHYZ+bF2F98NvCauu1Bar/IuhPJ9z+xejZCp9mLIy1HF8ox7oJ5KyQdcDs4n96 Rp/nkhAeWs1c3+56inUoFLw8KG6sn1hCz+szUZyuB8A+IS4gNFnr87/dbZVHFIMmyo wRycgHUFACz/hovYvT/nvVzKHuyxfA9uVS3/JrgU= 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 6.1 107/482] platform/chrome: cros_ec_typec: Defer probe on missing EC parent Date: Tue, 26 Aug 2025 13:06:00 +0200 Message-ID: <20250826110933.470184026@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110930.769259449@linuxfoundation.org> References: <20250826110930.769259449@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 6.1-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 51b98f6c7b39..748efa73378c 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -1194,8 +1194,8 @@ 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