From patchwork Thu Aug 20 09:22:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 265545 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64DEDC433E3 for ; Thu, 20 Aug 2020 11:41:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2FF272054F for ; Thu, 20 Aug 2020 11:41:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597923678; bh=mtsko70TWTc6ttCymmwY8gqp2jWH6kl8tFnY4Qf8wsY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=lvgIiwClIgr2dWDnXOmNj4KohB9lTKXZ7vVzs5ckuDdRDwEMa4gVN6eNBCQFJqAHy Ws9ZssRp/BvwBFo1cPCf8Elki7rc+s+3hsxNzPpJD/C06l5a6hUbPNIujqwIWzgbn3 BJo3tCoRbOwAcxcDAci50QiDnSYpNBnhogUohZZw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730655AbgHTLlP (ORCPT ); Thu, 20 Aug 2020 07:41:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:57734 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730621AbgHTKEs (ORCPT ); Thu, 20 Aug 2020 06:04:48 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9AE9020738; Thu, 20 Aug 2020 10:04:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597917887; bh=mtsko70TWTc6ttCymmwY8gqp2jWH6kl8tFnY4Qf8wsY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PgBUDJCZ6RYBwSDJFupOOihlMku+XPgK+bNX9pqeGMC6FscrAGu9+3VmTGmHvshIa bxX4t/RfYOr6zmXl6qAxTN6WscjSS7EdS6Ug2T3z5ORPMK4YiapIeYo/p/njqIgXaY SLfwSuxwYn9babjNHkjoTS0uqQ3jotIERrjbsjxI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Charles Keepax , Lee Jones , Sasha Levin Subject: [PATCH 4.9 192/212] mfd: arizona: Ensure 32k clock is put on driver unbind and error Date: Thu, 20 Aug 2020 11:22:45 +0200 Message-Id: <20200820091612.075808891@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091602.251285210@linuxfoundation.org> References: <20200820091602.251285210@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Charles Keepax [ Upstream commit ddff6c45b21d0437ce0c85f8ac35d7b5480513d7 ] Whilst it doesn't matter if the internal 32k clock register settings are cleaned up on exit, as the part will be turned off losing any settings, hence the driver hasn't historially bothered. The external clock should however be cleaned up, as it could cause clocks to be left on, and will at best generate a warning on unbind. Add clean up on both the probe error path and unbind for the 32k clock. Fixes: cdd8da8cc66b ("mfd: arizona: Add gating of external MCLKn clocks") Signed-off-by: Charles Keepax Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/arizona-core.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index 1f0c2b594654e..3382845d4b67d 100644 --- a/drivers/mfd/arizona-core.c +++ b/drivers/mfd/arizona-core.c @@ -1537,6 +1537,15 @@ int arizona_dev_init(struct arizona *arizona) arizona_irq_exit(arizona); err_pm: pm_runtime_disable(arizona->dev); + + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + case ARIZONA_32KZ_MCLK2: + arizona_clk32k_disable(arizona); + break; + default: + break; + } err_reset: arizona_enable_reset(arizona); regulator_disable(arizona->dcvdd); @@ -1558,6 +1567,15 @@ int arizona_dev_exit(struct arizona *arizona) regulator_disable(arizona->dcvdd); regulator_put(arizona->dcvdd); + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + case ARIZONA_32KZ_MCLK2: + arizona_clk32k_disable(arizona); + break; + default: + break; + } + mfd_remove_devices(arizona->dev); arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona); arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);