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authorPhilipp Zabel <p.zabel@pengutronix.de>2016-05-12 16:00:44 +0300
committerPhilipp Zabel <p.zabel@pengutronix.de>2016-05-23 13:35:11 +0300
commit310944d148e3600dcff8b346bee7fa01d34903b1 (patch)
treeca14e1344f6122ee02f005e5e67bf8d9a75f8f80 /drivers/gpu/ipu-v3
parent2dcd0af568b0cf583645c8a317dd12e344b1c72a (diff)
downloadlinux-310944d148e3600dcff8b346bee7fa01d34903b1.tar.xz
drm/imx: Match imx-ipuv3-crtc components using device node in platform data
The component master driver imx-drm-core matches component devices using their of_node. Since commit 950b410dd1ab ("gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading"), the imx-ipuv3-crtc dev->of_node is not set during probing. Before that, of_node was set and caused an of: modalias to be used instead of the platform: modalias, which broke module autoloading. On the other hand, if dev->of_node is not set yet when the imx-ipuv3-crtc probe function calls component_add, component matching in imx-drm-core fails. While dev->of_node will be set once the next component tries to bring up the component master, imx-drm-core component binding will never succeed if one of the crtc devices is probed last. Add of_node to the component platform data and match against the pdata->of_node instead of dev->of_node in imx-drm-core to work around this problem. Cc: <stable@vger.kernel.org> # 4.4.x Fixes: 950b410dd1ab ("gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading") Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Fabio Estevam <fabio.estevam@nxp.com> Tested-by: Lothar Waßmann <LW@KARO-electronics.de> Tested-by: Heiko Schocher <hs@denx.de> Tested-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Diffstat (limited to 'drivers/gpu/ipu-v3')
-rw-r--r--drivers/gpu/ipu-v3/ipu-common.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index abb98c77bad2..99dcacf05b99 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -997,7 +997,7 @@ struct ipu_platform_reg {
};
/* These must be in the order of the corresponding device tree port nodes */
-static const struct ipu_platform_reg client_reg[] = {
+static struct ipu_platform_reg client_reg[] = {
{
.pdata = {
.csi = 0,
@@ -1048,7 +1048,7 @@ static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
mutex_unlock(&ipu_client_id_mutex);
for (i = 0; i < ARRAY_SIZE(client_reg); i++) {
- const struct ipu_platform_reg *reg = &client_reg[i];
+ struct ipu_platform_reg *reg = &client_reg[i];
struct platform_device *pdev;
struct device_node *of_node;
@@ -1070,6 +1070,7 @@ static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
pdev->dev.parent = dev;
+ reg->pdata.of_node = of_node;
ret = platform_device_add_data(pdev, &reg->pdata,
sizeof(reg->pdata));
if (!ret)