From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 07 Jun 2021 16:14:38 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lqG1W-0000jR-7b for lore@lore.pengutronix.de; Mon, 07 Jun 2021 16:14:38 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lqG1S-0004ov-8f for lore@pengutronix.de; Mon, 07 Jun 2021 16:14:38 +0200 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:To :From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=s7USxXrhEz++6/M58BkgYTI9bxFNu0/GzKjcopQMKo8=; b=UWaNOygN468/LV MqfXO5Vga3sG0gjjpl98l+iSCX6aXF1cOF8r+rrL5sUq1naGfdS5vPjxGbO07dszarhP98q0m2n5L szgLOZuoMIfHjjFuCx2ZspA2Ysk8FtlJ9EyOFIEFKxpf8wyqqCiSIy+svnOedNKL01G00hMoQrk/I GjYUqeGXcZZ69yQV4gbsnt2CGR8JjM8pWZGpuDZWgFpwgdCKXmuKResVE8F0Aa7Meki5zhq/LvC2k FE3pv29a6UILshbMG1x/ESIBbQ1YdVNM/QR/+xT1wv3+SPu4FgEzg0GZnvbPJmX84RBGQf0VaJEr9 rV6rMmnasSo8clujf8lw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lqG02-00410S-Qc; Mon, 07 Jun 2021 14:13:06 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lqFzu-0040za-5D for barebox@lists.infradead.org; Mon, 07 Jun 2021 14:13:02 +0000 Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lqFzs-0004gG-Vm; Mon, 07 Jun 2021 16:12:56 +0200 Received: from sha by dude02.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lqFzs-0006So-N6; Mon, 07 Jun 2021 16:12:56 +0200 From: Sascha Hauer To: Barebox List Date: Mon, 7 Jun 2021 16:12:56 +0200 Message-Id: <20210607141256.24801-1-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210607_071258_217865_39B7B1C3 X-CRM114-Status: GOOD ( 11.04 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH] clk: bail out early when rate is already desired one X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) Return successfully from clk_set_rate() when the rate is already the desired one. This prevents a failure in clk_set_rate() when the current clock doesn't have a set_rate hook. Signed-off-by: Sascha Hauer --- drivers/clk/clk.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 8b90f30486..ba726c342c 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -169,6 +169,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate) if (IS_ERR(clk)) return PTR_ERR(clk); + if (clk_get_rate(clk) == clk_round_rate(clk, rate)) + return 0; + if (!clk->ops->set_rate) return -ENOSYS; -- 2.29.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox