From f2b09f67047aa5da60718f1a92e9b7f26b9266b4 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 17 Apr 2013 22:34:11 +0200 Subject: [PATCH] ARM: OMAP2+: only search for GPMC DT child nodes on probe The GPMC DT probe function use for_each_node_by_name() to search child device nodes of the GPMC controller. But this function does not use the GPMC device node as the root of the search and instead search across the complete Device Tree. This means that any device node on the DT that is using any of the GPMC child nodes names searched for will be returned even if they are not connected to the GPMC, making the gpmc_probe_xxx_child() function to fail. Fix this by using the GPMC device node as the search root so the search will be restricted to its children. Reported-by: Lars Poeschel Signed-off-by: Javier Martinez Canillas Signed-off-by: Jon Hunter --- arch/arm/mach-omap2/gpmc.c | 33 ++++++++++----------------------- 1 file changed, 10 insertions(+), 23 deletions(-) diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index ed946df..6166847 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -1520,32 +1520,19 @@ static int gpmc_probe_dt(struct platform_device *pdev) return ret; } - for_each_node_by_name(child, "nand") { - ret = gpmc_probe_nand_child(pdev, child); - if (ret < 0) { - of_node_put(child); - return ret; - } - } + for_each_child_of_node(pdev->dev.of_node, child) { - for_each_node_by_name(child, "onenand") { - ret = gpmc_probe_onenand_child(pdev, child); - if (ret < 0) { - of_node_put(child); - return ret; - } - } + if (!child->name) + continue; - for_each_node_by_name(child, "nor") { - ret = gpmc_probe_generic_child(pdev, child); - if (ret < 0) { - of_node_put(child); - return ret; - } - } + if (of_node_cmp(child->name, "nand") == 0) + ret = gpmc_probe_nand_child(pdev, child); + else if (of_node_cmp(child->name, "onenand") == 0) + ret = gpmc_probe_onenand_child(pdev, child); + else if (of_node_cmp(child->name, "ethernet") == 0 || + of_node_cmp(child->name, "nor") == 0) + ret = gpmc_probe_generic_child(pdev, child); - for_each_node_by_name(child, "ethernet") { - ret = gpmc_probe_generic_child(pdev, child); if (ret < 0) { of_node_put(child); return ret; -- 2.7.4