From patchwork Tue Mar 8 07:55:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiasheng Jiang X-Patchwork-Id: 12773223 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 54FDAC433EF for ; Tue, 8 Mar 2022 07:57:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=e7BD9ETAKJWnJ/NIAEt1korDszOpnSAuvtm0+I3KlJI=; b=zmIZ69vU3DhpUa /P5DhbLbSsTNKQH37mTnOtlvqtFNLrYLwZKl+sBJ8KRkqPX1QFU5VrZUfr72kJGyZm0i0/SXcv/24 RUPwjbRY5oG3r3XIL5mYmzrFTKZJWIKLuo/P+Db3nnoJyPSw92Pln8CYPGiBQrt/enpf3Fx9e0+OF 8GZQ6e595IvHYjwF6ZKWO+B8u48ard9xOp3dE6fZVADHQYP4R17ZuEPyADOJT59W/q/dpede8u8Qu bG0AyAX28SR4eXGT3jPeSToRg8oNjF46kZjT0QzUmhnOSwwtDykGkq/xhZqMMRMJZGxynm6wFbTnj 4+nbA5dip+lWWd4GaF9g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRUhO-0037cg-BC; Tue, 08 Mar 2022 07:56:02 +0000 Received: from smtp21.cstnet.cn ([159.226.251.21] helo=cstnet.cn) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRUhC-0037ZL-04 for linux-arm-kernel@lists.infradead.org; Tue, 08 Mar 2022 07:55:51 +0000 Received: from localhost.localdomain (unknown [124.16.138.126]) by APP-01 (Coremail) with SMTP id qwCowAAXH_v8Cydi1kunAg--.11175S2; Tue, 08 Mar 2022 15:55:41 +0800 (CST) From: Jiasheng Jiang To: m.szyprowski@samsung.com, andrzej.hajda@intel.com, mchehab@kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Jiasheng Jiang Subject: [PATCH] media: s5p-mfc: Handle error for clk_enable Date: Tue, 8 Mar 2022 15:55:38 +0800 Message-Id: <20220308075538.1117983-1-jiasheng@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: qwCowAAXH_v8Cydi1kunAg--.11175S2 X-Coremail-Antispam: 1UD129KBjvdXoW7Xr47trW3CF4kuryrAFWrKrg_yoWftFg_C3 9rXw4fXr1YgrsIywsrKrySk3yrKFWkuws7XFySqF4fK34rK3W3ZrWqvr47Zw17AF4IvrWf Xr1DXrykCFy3CjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbzkFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCF04k20xvY0x0EwIxG rwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4 vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IY x2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26c xKx2IYs7xG6rWUJVWrZr1UMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7Cj xVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUdHUDUUUUU= X-Originating-IP: [124.16.138.126] X-CM-SenderInfo: pmld2xxhqjqxpvfd2hldfou0/ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220307_235550_450154_5F3421E9 X-CRM114-Status: UNSURE ( 9.70 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org As the potential failure of the clk_enable(), it should be better to check it and return error if fails. Fixes: 1bce6fb3edf1 ("[media] s5p-mfc: Rework clock handling") Signed-off-by: Jiasheng Jiang --- drivers/media/platform/s5p-mfc/s5p_mfc_pm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c index 88b7d33c9197..392e6fab0a75 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c @@ -106,10 +106,12 @@ int s5p_mfc_power_on(void) int s5p_mfc_power_off(void) { - int i; + int i, ret; /* finish software clock gating */ - clk_enable(pm->clock_gate); + ret = clk_enable(pm->clock_gate); + if (ret) + return ret; for (i = 0; i < pm->num_clocks; i++) clk_disable_unprepare(pm->clocks[i]);