[PATCH] drm/of: Consider the state in which the ep is disabled

[PATCH] drm/of: Consider the state in which the ep is disabled

[Sandy Huang]

don't mask possible_crtcs if remote-point is disabled.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
---
 drivers/gpu/drm/drm_of.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
index fdb05fbf72a0..f5f250435add 100644
--- a/drivers/gpu/drm/drm_of.c
+++ b/drivers/gpu/drm/drm_of.c
@@ -66,6 +66,11 @@ uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
 	uint32_t possible_crtcs = 0;
 
 	for_each_endpoint_of_node(port, ep) {
+		if (!of_device_is_available(ep)) {
+			of_node_put(ep);
+			continue;
+		}
+
 		remote_port = of_graph_get_remote_port(ep);
 		if (!remote_port) {
 			of_node_put(ep);
-- 
2.17.1



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Re: [PATCH] drm/of: Consider the state in which the ep is disabled

[Heiko Stübner]

Hi Sandy,

Am Montag, 6. Juli 2020, 09:59:44 CEST schrieb Sandy Huang:
> don't mask possible_crtcs if remote-point is disabled.
> 
> Signed-off-by: Sandy Huang <hjc@rock-chips.com>
> ---
>  drivers/gpu/drm/drm_of.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
> index fdb05fbf72a0..f5f250435add 100644
> --- a/drivers/gpu/drm/drm_of.c
> +++ b/drivers/gpu/drm/drm_of.c
> @@ -66,6 +66,11 @@ uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
>  	uint32_t possible_crtcs = 0;
>  
>  	for_each_endpoint_of_node(port, ep) {
> +		if (!of_device_is_available(ep)) {
> +			of_node_put(ep);

You'd only need the of_node_put here, if you were exiting the loop.

With the "continue" below, the next iteration of for_each_endpoint_of_node
will do the put on "ep"


Heiko

> +			continue;
> +		}
> +
>  		remote_port = of_graph_get_remote_port(ep);
>  		if (!remote_port) {
>  			of_node_put(ep);
> 




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Re: [PATCH] drm/of: Consider the state in which the ep is disabled

[Huang Jiachai]

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Hi heiko

在 2020/7/6 17:47, Heiko Stübner 写道:
> Hi Sandy,
>
> Am Montag, 6. Juli 2020, 09:59:44 CEST schrieb Sandy Huang:
>> don't mask possible_crtcs if remote-point is disabled.
>>
>> Signed-off-by: Sandy Huang <hjc@rock-chips.com>
>> ---
>>   drivers/gpu/drm/drm_of.c | 5 +++++
>>   1 file changed, 5 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
>> index fdb05fbf72a0..f5f250435add 100644
>> --- a/drivers/gpu/drm/drm_of.c
>> +++ b/drivers/gpu/drm/drm_of.c
>> @@ -66,6 +66,11 @@ uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
>>   	uint32_t possible_crtcs = 0;
>>   
>>   	for_each_endpoint_of_node(port, ep) {
>> +		if (!of_device_is_available(ep)) {
>> +			of_node_put(ep);
> You'd only need the of_node_put here, if you were exiting the loop.
>
> With the "continue" below, the next iteration of for_each_endpoint_of_node
> will do the put on "ep"
Just as we communicate on the google talk, the v2 patch will delete 
of_node_put(ep) and leave continue, thanks.
>
> Heiko
>
>> +			continue;
>> +		}
>> +
>>   		remote_port = of_graph_get_remote_port(ep);
>>   		if (!remote_port) {
>>   			of_node_put(ep);
>>
>
>
>
>
>
-- 
Best Regard

黄家钗
Sandy Huang
Addr: 福州市鼓楼区铜盘路软件大道89号福州软件园A区21号楼(350003)
       No. 21 Building, A District, No.89,software Boulevard Fuzhou,Fujian,PRC
Tel：+86 0591-87884919  8690
E-mail：hjc@rock-chips.com


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