From patchwork Wed Feb 5 14:57:11 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13961261 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3909F18CBFB; Wed, 5 Feb 2025 14:58:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738767487; cv=none; b=OgH6zHHKdLa+E4TuMYsCyRnx+mK7RE2pffsNzuAJwDdZpMm2a0ZE8S9X9ltsHHsV8fiq0BfXPojcKlCeGJh//a1CblMaVC71+zKDcbmgrrR4HKAwLnQfK7LhlbkiyOXkZTzeru48QRRYR4Wwkc9vPfjNZqdwCCtkBukBeNTmvbA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738767487; c=relaxed/simple; bh=M41KJpPTgtZC1kvfB0ok8XtGl6qr+rtNSYSFho5CTIc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uE85Ww/CuDLGTvoN181s9ZQpnuw9Etz/GA3os2COpTOm9NvNlu3fNyYUf+HFTzbT2X+s07C2IPlNrkA6RueLKqllShlKhBsNS5hTjTy2MQ+wnPS4K7d9Qk6TUiZywNRjeOXzXVtR3EokT5B0qMI3O9XjWQPwpk4OAUmY+z+JcOo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=SJCZmW8c; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="SJCZmW8c" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1738767487; x=1770303487; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=M41KJpPTgtZC1kvfB0ok8XtGl6qr+rtNSYSFho5CTIc=; b=SJCZmW8c4/crNZmYDauA01NMD2Oc8jhgBZVjIP+JC9YP85FD3UgGXiuw HS72OUEfy+s74SZjYn4zUkZHzjDz3EjyrxMcrIHBTOMRd3uWgKb1WGX0C NukW9ES5ilgfRJSRvunmWWN6lqMGEHUBtTSXPM+0BxpKG09lYa2pBKc82 gu7k8Ym5a8mn53KSDKGUxNlj1PNs3dSEwwgX+yANWZfIynZbbuVrc4OhD mToG6xDeiy5r87xCZKHCMt3/tJnNINpsR6EDe14QTdIn9ejaZ3/c4gayH H9vHqmY2MF8I5e2nzgK7pfcghFR3ZHdY1rxBXb8H9/jcketw7J3v7D5Bf A==; X-CSE-ConnectionGUID: psi4DFEATBS46/F7Gixd8A== X-CSE-MsgGUID: Ke2N1bDcR8SFIaO8NFXT2Q== X-IronPort-AV: E=McAfee;i="6700,10204,11336"; a="39232354" X-IronPort-AV: E=Sophos;i="6.13,261,1732608000"; d="scan'208";a="39232354" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Feb 2025 06:58:04 -0800 X-CSE-ConnectionGUID: +/C1jtaVQV+6by6EwWF+9w== X-CSE-MsgGUID: hG1snVx5SUO/cR2QZ8CmNw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="111806975" Received: from black.fi.intel.com ([10.237.72.28]) by orviesa008.jf.intel.com with ESMTP; 05 Feb 2025 06:58:00 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id C7EE5164; Wed, 05 Feb 2025 16:57:58 +0200 (EET) From: Andy Shevchenko To: Vinod Koul , Amelie Delaunay , Frank Li , Paul Cercueil , Randy Dunlap , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Andy Shevchenko Subject: [PATCH v3 3/4] dmaengine: Add a comment on why it's okay when kasprintf() fails Date: Wed, 5 Feb 2025 16:57:11 +0200 Message-ID: <20250205145757.889247-4-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.43.0.rc1.1336.g36b5255a03ac In-Reply-To: <20250205145757.889247-1-andriy.shevchenko@linux.intel.com> References: <20250205145757.889247-1-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a comment in dma_request_chan() to clarify kasprintf() missing return value check and it is correct functionality. Signed-off-by: Andy Shevchenko --- drivers/dma/dmaengine.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index c1357d7f3dc6..dd4224d90f07 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -854,8 +854,8 @@ struct dma_chan *dma_request_chan(struct device *dev, const char *name) found: #ifdef CONFIG_DEBUG_FS - chan->dbg_client_name = kasprintf(GFP_KERNEL, "%s:%s", dev_name(dev), - name); + chan->dbg_client_name = kasprintf(GFP_KERNEL, "%s:%s", dev_name(dev), name); + /* No functional issue if it fails, users are supposed to test before use */ #endif chan->name = kasprintf(GFP_KERNEL, "dma:%s", name);