drm/amd/pm: Replace one-element array with flexible-array member

[PATCH] drm/amd/pm: Replace one-element array with flexible-array member

Posted by cgel.zte@gmail.com 4 years, 5 months ago

From: Changcheng Deng <deng.changcheng@zte.com.cn>

There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use "flexible array members" for these cases. The older
style of one-element or zero-length arrays should no longer be used.
Reference:
https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
---
 drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h b/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h
index eb0f79f9c876..701aae598b58 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h
@@ -121,7 +121,7 @@ typedef struct SMU_Task SMU_Task;
 
 struct TOC {
     uint8_t JobList[NUM_JOBLIST_ENTRIES];
-    SMU_Task tasks[1];
+    SMU_Task tasks[];
 };
 
 // META DATA COMMAND Definitions
-- 
2.25.1

Re: [PATCH] drm/amd/pm: Replace one-element array with flexible-array member

Posted by Alex Deucher 4 years, 5 months ago

Applied.  Thanks!

On Fri, Jan 14, 2022 at 4:20 AM <cgel.zte@gmail.com> wrote:
>
> From: Changcheng Deng <deng.changcheng@zte.com.cn>
>
> There is a regular need in the kernel to provide a way to declare having
> a dynamically sized set of trailing elements in a structure. Kernel code
> should always use "flexible array members" for these cases. The older
> style of one-element or zero-length arrays should no longer be used.
> Reference:
> https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays
>
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
> ---
>  drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h b/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h
> index eb0f79f9c876..701aae598b58 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h
> +++ b/drivers/gpu/drm/amd/pm/powerplay/inc/smu_ucode_xfer_cz.h
> @@ -121,7 +121,7 @@ typedef struct SMU_Task SMU_Task;
>
>  struct TOC {
>      uint8_t JobList[NUM_JOBLIST_ENTRIES];
> -    SMU_Task tasks[1];
> +    SMU_Task tasks[];
>  };
>
>  // META DATA COMMAND Definitions
> --
> 2.25.1
>