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[91.118.163.37]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a5cec3d9b5csm836678066b.16.2024.05.22.02.18.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 May 2024 02:18:13 -0700 (PDT) From: Javier Carrasco Subject: [PATCH 0/2] device property: introduce fwnode_for_each_available_child_node_scoped() Date: Wed, 22 May 2024 11:18:06 +0200 Message-Id: <20240522-fwnode_for_each_available_child_node_scoped-v1-0-1188b0da12dc@gmail.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAE64TWYC/x2N0QrDIAwAf6XkeYLaDbb9yhiSxWQGRItCNyj99 0ofj4O7DTo35Q7PaYPGq3atZYC7TEAJy5eNxsHgrb/am3dGfqVGDlJbYKQUcEXN+MkcKGmO4bS d6sLR3MWJfcQZnSUYxaWx6P+8vd77fgDv54G6fQAAAA== To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Jean Delvare , Guenter Roeck , Antoniu Miclaus , Jonathan Cameron Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, Javier Carrasco X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1716369492; l=1324; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=Qr6USar02b6JYI0XqhLNAvs2zSTmqw+SpOFyKARZyC0=; b=skBC7zUYZmBdaCrkmOdXDTE2PXaZlyW5JfOQ1Hg+XTKbj89cB73pX1/WLeRvLF9XxGkP6ksJt l5P3CeIJplEDwPzIAUgDjPQvFfDXwvnqeKjyZpRX5uhwDc/nFvebP9g X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= The _scoped() version of the fwnode_for_each_available_child_node() follows the approach recently taken for other loops that handle child nodes like for_each_child_of_node_scoped() or device_for_each_child_node_scoped(), which are based on the __free() auto cleanup handler to remove the need for fwnode_handle_put() on early loop exits. This new variant has been tested with the LTC2992, which currently uses the non-scoped variant. There is one error path that does not decrement the refcount of the child node, which can be fixed by using the new macro. The bug was introduced in a later modification of the loop, which shows how useful an automatic cleanup solution can be in many uses of the non-scoped version. Signed-off-by: Javier Carrasco --- Javier Carrasco (2): device property: introduce fwnode_for_each_available_child_node_scoped() hwmon: (ltc2992) use fwnode_for_each_available_child_node_scoped() drivers/hwmon/ltc2992.c | 11 +++-------- include/linux/property.h | 5 +++++ 2 files changed, 8 insertions(+), 8 deletions(-) --- base-commit: 124cfbcd6d185d4f50be02d5f5afe61578916773 change-id: 20240521-fwnode_for_each_available_child_node_scoped-8f1f09d3a10c Best regards,