2024-05-11 13:24:45

by Sui Jingfeng

Subject: [PATCH] drm/bridge: tfp410: Remove a small useless code snippet

In the tfp410_attach(), the check on the existence of bridge->encoder has
already been done in the implementation of drm_bridge_attach() function.
The driver won't go further if bridge->encoder is NULL and the driver will
quit even if drm_bridge_attach() fails for some reasons.

Therefore there is no need to check another time at the later, remove the
redundant checking codes "if (!bridge->encoder) { ... }".

Signed-off-by: Sui Jingfeng <[email protected]>
---
drivers/gpu/drm/bridge/ti-tfp410.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index c7bef5c23927..b1b1e4d5a24a 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -133,11 +133,6 @@ static int tfp410_attach(struct drm_bridge *bridge,
if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
return 0;

- if (!bridge->encoder) {
- dev_err(dvi->dev, "Missing encoder\n");
- return -ENODEV;
- }
-
if (dvi->next_bridge->ops & DRM_BRIDGE_OP_DETECT)
dvi->connector.polled = DRM_CONNECTOR_POLL_HPD;
else
--
2.43.0

2024-05-12 21:12:57

by Laurent Pinchart

Subject: Re: [PATCH] drm/bridge: tfp410: Remove a small useless code snippet

Hi Sui,

Thank you for the patch.

On Sat, May 11, 2024 at 09:24:23PM +0800, Sui Jingfeng wrote:
> In the tfp410_attach(), the check on the existence of bridge->encoder has
> already been done in the implementation of drm_bridge_attach() function.
> The driver won't go further if bridge->encoder is NULL and the driver will
> quit even if drm_bridge_attach() fails for some reasons.
>
> Therefore there is no need to check another time at the later, remove the
> redundant checking codes "if (!bridge->encoder) { ... }".
>
> Signed-off-by: Sui Jingfeng <[email protected]>

Reviewed-by: Laurent Pinchart <[email protected]>

> ---
> drivers/gpu/drm/bridge/ti-tfp410.c | 5 -----
> 1 file changed, 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
> index c7bef5c23927..b1b1e4d5a24a 100644
> --- a/drivers/gpu/drm/bridge/ti-tfp410.c
> +++ b/drivers/gpu/drm/bridge/ti-tfp410.c
> @@ -133,11 +133,6 @@ static int tfp410_attach(struct drm_bridge *bridge,
> if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
> return 0;
>
> - if (!bridge->encoder) {
> - dev_err(dvi->dev, "Missing encoder\n");
> - return -ENODEV;
> - }
> -
> if (dvi->next_bridge->ops & DRM_BRIDGE_OP_DETECT)
> dvi->connector.polled = DRM_CONNECTOR_POLL_HPD;
> else

--
Regards,

Laurent Pinchart