If you're going to update the other patches to use IS_ERR_OR_NULL() please do so
here too. You can keep my R-b for that change.

Thanks for taking time to review the patch.

I have update the patch set and add this change to v5.

On 2023/7/21 18:24, Liviu Dudau wrote:
Hi Gaosheng,

On Fri, Jul 14, 2023 at 09:48:20AM +0800, Gaosheng Cui wrote:
The komeda_pipeline_get_state() returns an ERR_PTR() on failure, we should
use IS_ERR() to check the return value.

Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE")
Signed-off-by: Gaosheng Cui <cuigaoshe...@huawei.com>
Reviewed-by: Liviu Dudau <liviu.du...@arm.com>
---
  drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
index 3276a3e82c62..e9c92439398d 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
@@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component 
*c,
        u32 avail_scalers;
pipe_st = komeda_pipeline_get_state(c->pipeline, state);
-       if (!pipe_st)
+       if (IS_ERR(pipe_st))
If you're going to update the other patches to use IS_ERR_OR_NULL() please do so
here too. You can keep my R-b for that change.

Best regards,
Liviu

                return NULL;
avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^
--
2.25.1

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