Subject: [PATCH 4.19 129/273] media: Use of_node_name_eq for node name comparisons

From: Greg Kroah-Hartman <[email-masked]>
Date: Wed, 20 Sep 2023 13:29:29 +0200

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Rob Herring <[email-masked]>

[ Upstream commit 2fc6e404117e5b921097c929ba572a00e4421b50 ]

Convert string compares of DT node names to use of_node_name_eq helper
instead. This removes direct access to the node name pointer.

Cc: Kyungmin Park <[email-masked]>
Cc: Kukjin Kim <[email-masked]>
Cc: Krzysztof Kozlowski <[email-masked]>
Cc: Hyun Kwon <[email-masked]>
Cc: Michal Simek <[email-masked]>
Cc: [email-masked]
Cc: [email-masked]
Reviewed-by: Laurent Pinchart <[email-masked]>
Reviewed-by: Benoit Parrot <[email-masked]>
Signed-off-by: Rob Herring <[email-masked]>
Reviewed-by: Sylwester Nawrocki <[email-masked]>
Signed-off-by: Hans Verkuil <[email-masked]>
Signed-off-by: Mauro Carvalho Chehab <[email-masked]>
Stable-dep-of: d7b13edd4cb4 ("media: v4l2-core: Fix a potential resource leak in v4l2_fwnode_parse_link()")
Signed-off-by: Sasha Levin <[email-masked]>
---
 drivers/media/platform/exynos4-is/media-dev.c | 12 ++++++------
 drivers/media/platform/ti-vpe/cal.c           |  4 ++--
 drivers/media/platform/xilinx/xilinx-tpg.c    |  2 +-
 drivers/media/v4l2-core/v4l2-fwnode.c         |  6 ++----
 4 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index 03171f2cf2968..5f50ea283a04f 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -445,7 +445,7 @@ static int fimc_md_parse_port_node(struct fimc_md *fmd,
 	 */
 	np = of_get_parent(rem);
 
-	if (np && !of_node_cmp(np->name, "i2c-isp"))
+	if (of_node_name_eq(np, "i2c-isp"))
 		pd->fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
 	else
 		pd->fimc_bus_type = pd->sensor_bus_type;
@@ -492,7 +492,7 @@ static int fimc_md_register_sensor_entities(struct fimc_md *fmd)
 	for_each_available_child_of_node(parent, node) {
 		struct device_node *port;
 
-		if (of_node_cmp(node->name, "csis"))
+		if (!of_node_name_eq(node, "csis"))
 			continue;
 		/* The csis node can have only port subnode. */
 		port = of_get_next_child(node, NULL);
@@ -713,13 +713,13 @@ static int fimc_md_register_platform_entities(struct fimc_md *fmd,
 			continue;
 
 		/* If driver of any entity isn't ready try all again later. */
-		if (!strcmp(node->name, CSIS_OF_NODE_NAME))
+		if (of_node_name_eq(node, CSIS_OF_NODE_NAME))
 			plat_entity = IDX_CSIS;
-		else if	(!strcmp(node->name, FIMC_IS_OF_NODE_NAME))
+		else if (of_node_name_eq(node, FIMC_IS_OF_NODE_NAME))
 			plat_entity = IDX_IS_ISP;
-		else if (!strcmp(node->name, FIMC_LITE_OF_NODE_NAME))
+		else if (of_node_name_eq(node, FIMC_LITE_OF_NODE_NAME))
 			plat_entity = IDX_FLITE;
-		else if	(!strcmp(node->name, FIMC_OF_NODE_NAME) &&
+		else if (of_node_name_eq(node, FIMC_OF_NODE_NAME) &&
 			 !of_property_read_bool(node, "samsung,lcd-wb"))
 			plat_entity = IDX_FIMC;
 
diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index d945323fc437d..f9488e01a36f0 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -1618,7 +1618,7 @@ of_get_next_port(const struct device_node *parent,
 				return NULL;
 			}
 			prev = port;
-		} while (of_node_cmp(port->name, "port") != 0);
+		} while (!of_node_name_eq(port, "port"));
 	}
 
 	return port;
@@ -1638,7 +1638,7 @@ of_get_next_endpoint(const struct device_node *parent,
 		if (!ep)
 			return NULL;
 		prev = ep;
-	} while (of_node_cmp(ep->name, "endpoint") != 0);
+	} while (!of_node_name_eq(ep, "endpoint"));
 
 	return ep;
 }
diff --git a/drivers/media/platform/xilinx/xilinx-tpg.c b/drivers/media/platform/xilinx/xilinx-tpg.c
index 9c49d1d10bee5..06d25e5fafbf2 100644
--- a/drivers/media/platform/xilinx/xilinx-tpg.c
+++ b/drivers/media/platform/xilinx/xilinx-tpg.c
@@ -725,7 +725,7 @@ static int xtpg_parse_of(struct xtpg_device *xtpg)
 		const struct xvip_video_format *format;
 		struct device_node *endpoint;
 
-		if (!port->name || of_node_cmp(port->name, "port"))
+		if (!of_node_name_eq(port, "port"))
 			continue;
 
 		format = xvip_of_get_format(port);
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
index 169bdbb1f61a5..8046871e89f87 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -290,8 +290,7 @@ int v4l2_fwnode_parse_link(struct fwnode_handle *__fwnode,
 	fwnode = fwnode_get_parent(__fwnode);
 	fwnode_property_read_u32(fwnode, port_prop, &link->local_port);
 	fwnode = fwnode_get_next_parent(fwnode);
-	if (is_of_node(fwnode) &&
-	    of_node_cmp(to_of_node(fwnode)->name, "ports") == 0)
+	if (is_of_node(fwnode) && of_node_name_eq(to_of_node(fwnode), "ports"))
 		fwnode = fwnode_get_next_parent(fwnode);
 	link->local_node = fwnode;
 
@@ -304,8 +303,7 @@ int v4l2_fwnode_parse_link(struct fwnode_handle *__fwnode,
 	fwnode = fwnode_get_parent(fwnode);
 	fwnode_property_read_u32(fwnode, port_prop, &link->remote_port);
 	fwnode = fwnode_get_next_parent(fwnode);
-	if (is_of_node(fwnode) &&
-	    of_node_cmp(to_of_node(fwnode)->name, "ports") == 0)
+	if (is_of_node(fwnode) && of_node_name_eq(to_of_node(fwnode), "ports"))
 		fwnode = fwnode_get_next_parent(fwnode);
 	link->remote_node = fwnode;
 
-- 
2.40.1

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