From patchwork Mon Jan 30 11:41:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Zabel X-Patchwork-Id: 9544915 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D918B60417 for ; Mon, 30 Jan 2017 11:46:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DA34A1FF8F for ; Mon, 30 Jan 2017 11:46:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CF154209CD; Mon, 30 Jan 2017 11:46:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00 autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 713F41FF8F for ; Mon, 30 Jan 2017 11:46:42 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cYAPq-0005zH-Bf; Mon, 30 Jan 2017 11:46:34 +0000 Received: from metis.ext.4.pengutronix.de ([92.198.50.35]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cYALS-0001Xe-1X for linux-arm-kernel@lists.infradead.org; Mon, 30 Jan 2017 11:42:08 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7] helo=dude.pengutronix.de.) by metis.ext.pengutronix.de with esmtp (Exim 4.84_2) (envelope-from ) id 1cYAL7-00063o-B0; Mon, 30 Jan 2017 12:41:41 +0100 From: Philipp Zabel To: linux-kernel@vger.kernel.org Subject: [PATCH 05/14] [media] rc: sunxi-cir: simplify optional reset handling Date: Mon, 30 Jan 2017 12:41:07 +0100 Message-Id: <20170130114116.22089-5-p.zabel@pengutronix.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170130114116.22089-1-p.zabel@pengutronix.de> References: <20170130114116.22089-1-p.zabel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170130_034202_311016_FAF01F94 X-CRM114-Status: GOOD ( 10.70 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ramiro Oliveira , Philipp Zabel , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP As of commit bb475230b8e5 ("reset: make optional functions really optional"), the reset framework API calls use NULL pointers to describe optional, non-present reset controls. This allows to return errors from devm_reset_control_get_optional and to call reset_control_(de)assert unconditionally. Signed-off-by: Philipp Zabel --- drivers/media/rc/sunxi-cir.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-) diff --git a/drivers/media/rc/sunxi-cir.c b/drivers/media/rc/sunxi-cir.c index eaadc081760ae..b1e22bd47985e 100644 --- a/drivers/media/rc/sunxi-cir.c +++ b/drivers/media/rc/sunxi-cir.c @@ -174,16 +174,11 @@ static int sunxi_ir_probe(struct platform_device *pdev) /* Reset (optional) */ ir->rst = devm_reset_control_get_optional(dev, NULL); - if (IS_ERR(ir->rst)) { - ret = PTR_ERR(ir->rst); - if (ret == -EPROBE_DEFER) - return ret; - ir->rst = NULL; - } else { - ret = reset_control_deassert(ir->rst); - if (ret) - return ret; - } + if (IS_ERR(ir->rst)) + return PTR_ERR(ir->rst); + ret = reset_control_deassert(ir->rst); + if (ret) + return ret; ret = clk_set_rate(ir->clk, SUNXI_IR_BASE_CLK); if (ret) { @@ -292,8 +287,7 @@ static int sunxi_ir_probe(struct platform_device *pdev) exit_clkdisable_apb_clk: clk_disable_unprepare(ir->apb_clk); exit_reset_assert: - if (ir->rst) - reset_control_assert(ir->rst); + reset_control_assert(ir->rst); return ret; } @@ -305,8 +299,7 @@ static int sunxi_ir_remove(struct platform_device *pdev) clk_disable_unprepare(ir->clk); clk_disable_unprepare(ir->apb_clk); - if (ir->rst) - reset_control_assert(ir->rst); + reset_control_assert(ir->rst); spin_lock_irqsave(&ir->ir_lock, flags); /* disable IR IRQ */