Re: [PATCH v3 1/5] drm/panthor: Preserve the result returned by panthor_fw_resume()

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On Wed, Dec 11, 2024 at 08:54:15AM +0100, Boris Brezillon wrote:
> WARN() will return true if the condition is true, false otherwise.
> If we store the return of drm_WARN_ON() in ret, we lose the actual
> error code.
> 
> v3:
> - Add R-b
> v2:
> - Add R-b
> 
> Fixes: 5fe909cae118 ("drm/panthor: Add the device logical block")
> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
> Reviewed-by: Steven Price <steven.price@xxxxxxx>
> Reviewed-by: Adrian Larumbe <adrian.larumbe@xxxxxxxxxxxxx>

Reviewed-by: Liviu Dudau <liviu.dudau@xxxxxxx>

Best regards,
Liviu

> ---
>  drivers/gpu/drm/panthor/panthor_device.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panthor/panthor_device.c b/drivers/gpu/drm/panthor/panthor_device.c
> index 984615f4ed27..e701e605d013 100644
> --- a/drivers/gpu/drm/panthor/panthor_device.c
> +++ b/drivers/gpu/drm/panthor/panthor_device.c
> @@ -461,8 +461,8 @@ int panthor_device_resume(struct device *dev)
>  	    drm_dev_enter(&ptdev->base, &cookie)) {
>  		panthor_gpu_resume(ptdev);
>  		panthor_mmu_resume(ptdev);
> -		ret = drm_WARN_ON(&ptdev->base, panthor_fw_resume(ptdev));
> -		if (!ret) {
> +		ret = panthor_fw_resume(ptdev);
> +		if (!drm_WARN_ON(&ptdev->base, ret)) {
>  			panthor_sched_resume(ptdev);
>  		} else {
>  			panthor_mmu_suspend(ptdev);
> -- 
> 2.47.0
> 

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯



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