From mboxrd@z Thu Jan 1 00:00:00 1970 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 C01E4CE7AB0 for ; Mon, 9 Sep 2024 05:24:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:References:Cc:To:From:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=0M1AFa+SZm6oA5z81Y10TUvwBJA3uZtXae2KqIrvYK8=; b=mw4Qx6n6rLc3ICB/wnk7N5wP6T jUKD/NUZnpESlguzALL2QPFy6cvwA/GpqF0bh2IvE5KvpNxeQBN0yczxCx6+jLzztQgVuHrz74nwp lXCrYrUzYt44onkA3V7FvGZu7roSarq4zDCHxflFfcYha5vA4z6Vl3Xb2Y+6K4hUJ2ESKS1GjwaRk itvaPpPule4nmR7ldsH84nAD1d3HSDDP/127r/ejRZSGrvjCk/L+cMCElLyFT4O1lszNTLRMRbsxe vT26tzuHktA2X2lHKOaEi4MwT4Y0q88xgxkMNZbihZIT8qfqefEF79K0DbZukdgLNPmSNKgNGfjc2 vizJWH2g==; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240908_222305_596116_2D5A21D6 X-CRM114-Status: GOOD ( 17.71 ) 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 Hi Laurent, Jacopo, On 09/09/2024 08:08, Tomi Valkeinen wrote: > Hi, > > On 05/09/2024 14:11, Laurent Pinchart wrote: >> On Thu, Sep 05, 2024 at 06:50:48PM +0800, kernel test robot wrote: >>> Hi Tomi, >>> >>> kernel test robot noticed the following build warnings: >>> >>> [auto build test WARNING on 431c1646e1f86b949fa3685efc50b660a364c2b6] >>> >>> url:    https://github.com/intel-lab-lkp/linux/commits/Tomi- >>> Valkeinen/media-uapi-Add-meta-formats-for-PiSP-FE-config-and- >>> stats/20240904-192729 >>> base:   431c1646e1f86b949fa3685efc50b660a364c2b6 >>> patch link:    https://lore.kernel.org/r/20240904-rp1-cfe-v4-3- >>> f1b5b3d69c81%40ideasonboard.com >>> patch subject: [PATCH v4 3/4] media: raspberrypi: Add support for >>> RP1-CFE >>> config: m68k-allmodconfig (https://download.01.org/0day-ci/ >>> archive/20240905/202409051822.ZzUGw3XQ-lkp@intel.com/config) >>> compiler: m68k-linux-gcc (GCC) 14.1.0 >>> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/ >>> archive/20240905/202409051822.ZzUGw3XQ-lkp@intel.com/reproduce) >>> >>> If you fix the issue in a separate patch/commit (i.e. not just a new >>> version of >>> the same patch/commit), kindly add following tags >>> | Reported-by: kernel test robot >>> | Closes: https://lore.kernel.org/oe-kbuild- >>> all/202409051822.ZzUGw3XQ-lkp@intel.com/ >>> >>> All warnings (new ones prefixed by >>): >>> >>>>> drivers/media/platform/raspberrypi/rp1-cfe/cfe.c:2445:12: warning: >>>>> 'cfe_runtime_resume' defined but not used [-Wunused-function] >>>      2445 | static int cfe_runtime_resume(struct device *dev) >>>           |            ^~~~~~~~~~~~~~~~~~ >>>>> drivers/media/platform/raspberrypi/rp1-cfe/cfe.c:2435:12: warning: >>>>> 'cfe_runtime_suspend' defined but not used [-Wunused-function] >>>      2435 | static int cfe_runtime_suspend(struct device *dev) >>>           |            ^~~~~~~~~~~~~~~~~~~ >>> vim +/cfe_runtime_resume +2445 drivers/media/platform/raspberrypi/ >>> rp1-cfe/cfe.c >> >> The recommended way to fix this is to switch from SET_RUNTIME_PM_OPS() >> to RUNTIME_PM_OPS() and use pm_ptr() to set .driver.pm. This being said, >> the driver won't work on a kernel with !CONFIG_PM given how you >> implemented probe() and remove(). >> >> The pisp-be driver suffered from the same issue and Jacopo fixed it in >> the last version. You can have a look at implement something similar. > > I can't right away think of any reason to not just depend on CONFIG_PM > and be done with it without any tricks. Do you know if there's a reason? Also, I don't think pisp-be is correct. It just calls pispbe_runtime_resume() in probe() to wake the IP up (which only enables pisp clock), without telling the runtime PM about it. This means the parent device and the suppliers may not be powered up. Tomi