lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Fri, 12 May 2017 11:22:41 +0800
From:   Minghsiu Tsai <>
To:     Hans Verkuil <>,
        <>, Rob Herring <>,
        Mauro Carvalho Chehab <>,
        Matthias Brugger <>,
        Daniel Kurtz <>,
        Pawel Osciak <>,
        Houlong Wei <>
CC:     <>,
        Eddie Huang <>,
        Yingjoe Chen <>,
        Wu-Cheng Li <>,
        <>, <>,
        Minghsiu Tsai <>
Subject: [PATCH v3 3/3] media: mtk-mdp: Fix mdp device tree

From: Daniel Kurtz <>

If the mdp_* nodes are under an mdp sub-node, their corresponding
platform device does not automatically get its iommu assigned properly.

Fix this by moving the mdp component nodes up a level such that they are
siblings of mdp and all other SoC subsystems.  This also simplifies the
device tree.

Although it fixes iommu assignment issue, it also break compatibility
with old device tree. So, the patch in driver is needed to iterate over
sibling mdp device nodes, not child ones, to keep driver work properly.

Signed-off-by: Daniel Kurtz <>
Signed-off-by: Minghsiu Tsai <>

 drivers/media/platform/mtk-mdp/mtk_mdp_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
index 9e4eb7d..a5ad586 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
@@ -118,7 +118,7 @@ static int mtk_mdp_probe(struct platform_device *pdev)
 	/* Iterate over sibling MDP function blocks */
-	for_each_child_of_node(dev->of_node, node) {
+	for_each_child_of_node(dev->of_node->parent, node) {
 		const struct of_device_id *of_id;
 		enum mtk_mdp_comp_type comp_type;
 		int comp_id;

Powered by blists - more mailing lists