From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 7B1C72D97B7; Thu, 12 Mar 2026 14:35:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773326110; cv=none; b=itGWdFXyVZhkKT00lUGTlUW2K0u0XLCbQAzsQ9KOBnlKlYx2laJsZckgs+uek58+Xd3clnRTTUKw/Fmi33yH2j0DAY6mB6+yHAuNcY2dXwoE0bCzaEk3XYqk7bxQ4OzEJEjeLaYEERrSSdqjfGRAqRogNc5apqnf6n+Z7XYZdUQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773326110; c=relaxed/simple; bh=RcXFTHeCjEhloIHBRe6yEZvJTq8qqV8nTHMr9SYBtHA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=J9WPTvG7KRE/gHpj0TTMQm1NHpOFEflh800P5ETJBajU8b5V5XrOKa34bjccPsPFgVnc3KOSfR2k7kNd36YLzyOIh1qAXCB5K6Monklgas9LG0iCX4SbMZXqvrsevKvu6T7w+VRqzQQw/xzTtMHZ3bs7bviwMlu0yJNtXTJ6j/Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jsU0J/If; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jsU0J/If" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1FB9AC4CEF7; Thu, 12 Mar 2026 14:35:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1773326110; bh=RcXFTHeCjEhloIHBRe6yEZvJTq8qqV8nTHMr9SYBtHA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=jsU0J/IffT2hOrDbN7EaGlQtW1ApDvSwggb7cprhkjLdrLdb5hLDCpHme4cerhsUW di/EpRE43w4Cdf5zTXQkWuJfyqq2bR9WoK98FxMUHqO9XkqMl7EhWc+X0Im3gDzDb0 fr4+w+IjGaaeI6doHgqWauKiSdBl+tkVOTFONTek= Date: Thu, 12 Mar 2026 15:35:05 +0100 From: Greg Kroah-Hartman To: Li Ming Cc: "Rafael J. Wysocki" , Danilo Krummrich , Davidlohr Bueso , Jonathan Cameron , Dave Jiang , Alison Schofield , Vishal Verma , Ira Weiny , Dan Williams , Bjorn Helgaas , Ben Cheatham , driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, linux-cxl@vger.kernel.org Subject: Re: [PATCH 1/7] driver core: Add conditional guard support for device_lock() Message-ID: <2026031258-freefall-cherub-23d2@gregkh> References: <20260310-fix_access_endpoint_without_drv_check-v1-0-94fe919a0b87@zohomail.com> <20260310-fix_access_endpoint_without_drv_check-v1-1-94fe919a0b87@zohomail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260310-fix_access_endpoint_without_drv_check-v1-1-94fe919a0b87@zohomail.com> On Tue, Mar 10, 2026 at 11:57:53PM +0800, Li Ming wrote: > Introduce conditional guard version of device_lock() for scenarios that > require conditional device lock holding. > > Suggested-by: Dan Williams > Signed-off-by: Li Ming > --- > include/linux/device.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/linux/device.h b/include/linux/device.h > index 0be95294b6e6..4fafee80524b 100644 > --- a/include/linux/device.h > +++ b/include/linux/device.h > @@ -911,6 +911,7 @@ static inline void device_unlock(struct device *dev) > } > > DEFINE_GUARD(device, struct device *, device_lock(_T), device_unlock(_T)) > +DEFINE_GUARD_COND(device, _intr, device_lock_interruptible(_T), _RET == 0) > > static inline void device_lock_assert(struct device *dev) > { > > -- > 2.43.0 > Acked-by: Greg Kroah-Hartman