From patchwork Thu Apr 11 05:22:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 13625413 Received: from mail5.25mail.st (mail5.25mail.st [74.50.62.9]) (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 CA2CB1C0DE7; Thu, 11 Apr 2024 05:23:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.50.62.9 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712813030; cv=none; b=b1PTsdqVv8aeJiWLF4yWYxyQAQJeCAs1x4KJ31deKnaO8fYB7X1WH8FgRHFTSMJguin0kLBW5kc3mtYBCekaaZP8TlNkzp/dK1WiEBJRPnTKSToBTGttFj6QAgvnAlfWKZc2H1bJl7iI+gZ8JtfH53833Get4K04Wtil2gR6fwM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712813030; c=relaxed/simple; bh=6jjiVUe5YOImZgDXsgqmOEfi4ySQyj03YKG67dWJEeM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=g4MtK7t0tXqlLShVRB44qRjW0zIWgEsoozE4AATJiUymoYQFEsoKBdiAQO7V2DMAH0Ehx/Zkhqo/B+e1obWvJ9fqjPYRuYQ6x7Tx+sUBzQMJRG+vvCnl26FAkNE5O1bq4pnVo69cgKg/53Wz28zELEkvpaXQCxYRN+4JxjpP/xM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=atomide.com; spf=fail smtp.mailfrom=atomide.com; dkim=pass (2048-bit key) header.d=atomide.com header.i=@atomide.com header.b=WjuapCUO; arc=none smtp.client-ip=74.50.62.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=atomide.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=atomide.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=atomide.com header.i=@atomide.com header.b="WjuapCUO" Received: from localhost (91-158-86-216.elisa-laajakaista.fi [91.158.86.216]) by mail5.25mail.st (Postfix) with ESMTPSA id 3263D6084E; Thu, 11 Apr 2024 05:23:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=atomide.com; s=25mailst; t=1712813027; bh=6jjiVUe5YOImZgDXsgqmOEfi4ySQyj03YKG67dWJEeM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WjuapCUOaPmI6mMcntHJh0h7Tw3CbxrAK7bFbtSgt11qvgmzL+eIoNUDuYl0KdB6C Yp5+C4OH3F/1EJD60oTzsLmAS1a++DtJZUTwfJKxmqwjbC8J165ItaK0YXtWvGAsxp blYPjJl92F7juHYRbc+47ovz+yhyr64I7BAsuBBdRJBqWgwgtA4Ieea2AUrs9SBSMW 6OtsegoXqctpLLdraMgxjk0/aE8y6adiP/UKwhHQ4kHRVHuYDKc9P7zzIyx2wLo2kQ 1pjVcf7LgV450oaCF5U/U6VaBE2yNBbLlJyTcyCRCXJNGK9f2HdbimRDAYCNQj4z4I mUFKHEwj+JSxA== From: Tony Lindgren To: linux-omap@vger.kernel.org Cc: Dhruva Gole , Greg Kroah-Hartman , Philipp Zabel , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org Subject: [RFC PATCH 1/4] reset: Fall back to lookup if no reset node is found Date: Thu, 11 Apr 2024 08:22:54 +0300 Message-ID: <20240411052257.2113-2-tony@atomide.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240411052257.2113-1-tony@atomide.com> References: <20240411052257.2113-1-tony@atomide.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Fall back to lookup if the reset node does not exist. When creating and removing subdevices on an interconnect, the parent device may provide resets for the children using struct reset_control_lookup instead using devicetree. Signed-off-by: Tony Lindgren --- drivers/reset/core.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/reset/core.c b/drivers/reset/core.c --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -1141,12 +1141,17 @@ struct reset_control *__reset_control_get(struct device *dev, const char *id, int index, bool shared, bool optional, bool acquired) { + struct reset_control *rstc; + if (WARN_ON(shared && acquired)) return ERR_PTR(-EINVAL); - if (dev->of_node) - return __of_reset_control_get(dev->of_node, id, index, shared, + if (dev->of_node) { + rstc = __of_reset_control_get(dev->of_node, id, index, shared, optional, acquired); + if (!(IS_ERR(rstc) && PTR_ERR(rstc) == -ENOENT)) + return rstc; + } return __reset_control_get_from_lookup(dev, id, shared, optional, acquired);