2020-05-06 12:52:11

by 赵军奎

[permalink] [raw]
Subject: [PATCH] drm/exynos: remove no need devm_kfree in probe [re-send, welcome any comments]

Remove no need devm_kfree in probe.
The change is to make the code a bit more readable

Signed-off-by: Bernard Zhao <[email protected]>
---
drivers/gpu/drm/exynos/exynos_drm_dpi.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
index 43fa0f26c052..e06f7d7a6695 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
@@ -181,10 +181,8 @@ static int exynos_dpi_parse_dt(struct exynos_dpi *ctx)
return -ENOMEM;

ret = of_get_videomode(dn, vm, 0);
- if (ret < 0) {
- devm_kfree(dev, vm);
+ if (ret < 0)
return ret;
- }

ctx->vm = vm;

@@ -233,10 +231,8 @@ struct drm_encoder *exynos_dpi_probe(struct device *dev)
ctx->dev = dev;

ret = exynos_dpi_parse_dt(ctx);
- if (ret < 0) {
- devm_kfree(dev, ctx);
- return NULL;
- }
+ if (ret < 0)
+ return ERR_PTR(ret);

if (ctx->panel_node) {
ctx->panel = of_drm_find_panel(ctx->panel_node);
--
2.26.2


[re-send, welcome any comments]
Regards,
Bernard





2020-05-08 07:56:40

by Sam Ravnborg

[permalink] [raw]
Subject: Re: [PATCH] drm/exynos: remove no need devm_kfree in probe [re-send, welcome any comments]

Hi Bernard.

On Wed, May 06, 2020 at 08:49:03PM +0800, Bernard wrote:
> Remove no need devm_kfree in probe.
> The change is to make the code a bit more readable
>
> Signed-off-by: Bernard Zhao <[email protected]>

Could you take a closer look and fix similar patterns
in the rest of the driver?
For example in exynos_dpi_probe()

Is would be nice to only have to review for this
type of changes once, so one patch-set is preferred
over single patches over time.

You can add:
Reviewed-by: Sam Ravnborg <[email protected]>

to this patch when you re-send a new series.

Thanks,
Sam

> ---
> drivers/gpu/drm/exynos/exynos_drm_dpi.c | 10 +++-------
> 1 file changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
> index 43fa0f26c052..e06f7d7a6695 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
> @@ -181,10 +181,8 @@ static int exynos_dpi_parse_dt(struct exynos_dpi *ctx)
> return -ENOMEM;
>
> ret = of_get_videomode(dn, vm, 0);
> - if (ret < 0) {
> - devm_kfree(dev, vm);
> + if (ret < 0)
> return ret;
> - }
>
> ctx->vm = vm;
>
> @@ -233,10 +231,8 @@ struct drm_encoder *exynos_dpi_probe(struct device *dev)
> ctx->dev = dev;
>
> ret = exynos_dpi_parse_dt(ctx);
> - if (ret < 0) {
> - devm_kfree(dev, ctx);
> - return NULL;
> - }
> + if (ret < 0)
> + return ERR_PTR(ret);
>
> if (ctx->panel_node) {
> ctx->panel = of_drm_find_panel(ctx->panel_node);
> --
> 2.26.2
>
>
> [re-send, welcome any comments]
> Regards,
> Bernard
>
>
>
>
> _______________________________________________
> dri-devel mailing list
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

2020-05-08 08:48:55

by 赵军奎

[permalink] [raw]
Subject: Re:Re: [PATCH] drm/exynos: remove no need devm_kfree in probe [re-send, welcome any comments]



From: Sam Ravnborg <[email protected]>
Date: 2020-05-08 15:52:10
To: Bernard <[email protected]>
Cc: Inki Dae <[email protected]>,Joonyoung Shim <[email protected]>,Seung-Woo Kim <[email protected]>,Kyungmin Park <[email protected]>,David Airlie <[email protected]>,Daniel Vetter <[email protected]>,Kukjin Kim <[email protected]>,Krzysztof Kozlowski <[email protected]>,[email protected],[email protected],[email protected],[email protected],[email protected]
Subject: Re: [PATCH] drm/exynos: remove no need devm_kfree in probe [re-send, welcome any comments]>Hi Bernard.
>
>On Wed, May 06, 2020 at 08:49:03PM +0800, Bernard wrote:
>> Remove no need devm_kfree in probe.
>> The change is to make the code a bit more readable
>>
>> Signed-off-by: Bernard Zhao <[email protected]>
>
>Could you take a closer look and fix similar patterns
>in the rest of the driver?
>For example in exynos_dpi_probe()
>
>Is would be nice to only have to review for this
>type of changes once, so one patch-set is preferred
>over single patches over time.
>
>You can add:
>Reviewed-by: Sam Ravnborg <[email protected]>
>
>to this patch when you re-send a new series.
>
>Thanks,
> Sam

Hi
Sure, this is also a good chance for me to learn this code.
I will re-check this part of the exynos driver code to see
if there are similar patterns, and then re-send a patch series.

Regards,
Bernard

>> ---
>> drivers/gpu/drm/exynos/exynos_drm_dpi.c | 10 +++-------
>> 1 file changed, 3 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
>> index 43fa0f26c052..e06f7d7a6695 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
>> @@ -181,10 +181,8 @@ static int exynos_dpi_parse_dt(struct exynos_dpi *ctx)
>> return -ENOMEM;
>>
>> ret = of_get_videomode(dn, vm, 0);
>> - if (ret < 0) {
>> - devm_kfree(dev, vm);
>> + if (ret < 0)
>> return ret;
>> - }
>>
>> ctx->vm = vm;
>>
>> @@ -233,10 +231,8 @@ struct drm_encoder *exynos_dpi_probe(struct device *dev)
>> ctx->dev = dev;
>>
>> ret = exynos_dpi_parse_dt(ctx);
>> - if (ret < 0) {
>> - devm_kfree(dev, ctx);
>> - return NULL;
>> - }
>> + if (ret < 0)
>> + return ERR_PTR(ret);
>>
>> if (ctx->panel_node) {
>> ctx->panel = of_drm_find_panel(ctx->panel_node);
>> --
>> 2.26.2
>>
>>
>> [re-send, welcome any comments]
>> Regards,
>> Bernard
>>
>>
>>
>>
>> _______________________________________________
>> dri-devel mailing list
>> [email protected]
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel